ENR 2025 Top 225 International Design Firms by sidaracollaborative

Overview p. 52 // International Market Analysis p. 52 // International Region Analysis p. 53 // Staff Hiring p. 53 // Profit-Loss p. 53 // 2024 Revenue Totals p. 53 // Past Decade’s International Design Revenue p. 54 // How Design Firms

Shared the 2024 Market p. 54 // Top 10 by Market p. 55 // Top 10 by Region p. 56 // Backlog p. 56 // Cable-stayed Bridge Will

Be Africa’s Longest p. 57 // JV Helps Jordan Tackle Refugee Crisis p. 58 // How to Read the Tables p. 59 // Top 225 International Design Firms List p. 61 // Top 225 Index p. 66 // Top 150 Global Design Firms List p. 67 // Top 150 Index p. 70

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UAE-based Dewan is architect on the 78,087-sq-m Layan Verde mixed-use development in Phuket, Thailand, which includes residences and two hotels and is set to finish in 2027.

The Top 225 International Design Firms

Global Innovation Demands Grow

Investments in artificial intelligence, climate resilience and energy transition boost Top 225 design revenue and firm operations by Emell Adolphus and Jonathan Keller

Global AEC sector transformation lurches forward in another consecutive year of growth for ENR’s Top 225 International Design Firms—driven by energy transition and more intense geopolitical and climate-linked challenges. As firms innovate to stay competitive, revenue numbers reveal how domestic and overseas markets are shifting.

Sustainability, ESG (environmental, social and governance) integration, artificial intelligence and resilient and adaptive infrastructure systems are among global trends prompting design ﬁrms to “reimagine their business models, enhance operational eﬃciency and improve the return on investment for clients,” says Hamzeh Awwad, CEO of AJi Group, ranked No. 86 on the Top 225 list.

As design firms juggle geopolitical and economic uncertainties in the form of rising construction and materials costs, and supply chain disruptions on an international scale, such challenges can directly aﬀect project ﬁnancing and delivery timelines, Awwad adds.

“These issues are often more acute than in our home markets, where regulatory frameworks and economic conditions tend to be more stable and familiar.”

Adjusting to Market Challenges

In tackling complex market challenges, AJi Group’s solution has been to adopt a transformation mindset: “As the region transforms, so must we,” Awwad says, adding that the firm sees project chal-

International Market Analysis

International Region Analysis

lenges as an “opportunity to raise the standard” by “empowering local talent, embedding sustainability or driving cross-border collaboration.”

Local collaboration and developing regional relationships have been facets of Archetype Group’s success, according to the No. 165-ranked firm, with a portfolio spanning 50 countries.

Last year, it announced all of their buildings will be green certified by 2032, which CEO and Co-founder Pierre-Jean Malgouyres says is driven by rising client demand for more sustainable and resilient structures that also reduce environmental impact.

“Most of our clients are multinational companies that now prioritize energy-efficient systems and lowcarbon materials to meet carbon-neutral goals, aligning with a zero-carbon footprint target,” he says.

The World Economic Forum estimates a $15-trillion investment gap for global infrastructure by 2040, with an annual $3.3 trillion needed to support anticipated global economic growth. Aurecon, ranked No. 55, has preemptively appointed a chief engineering, eminence and innovation officer to spearhead complex infrastructure-related challenges “to support our peo-

ple to relentlessly pursue engineering collaboration, and technical and delivery excellence,” says CEO Louise Adams.

“We are operating in a dynamic yet complex world, which presents a multitude of challenges for engineers as well as opportunities,” she notes.

Behind the Numbers

Overall, international design revenue for the Top 225 rose 7.7% between 2023 and 2024, to $89.3 million from $82.94 million. Median international revenue is up 6.9%, totaling $63.89 million. Of the 211 firms that filed surveys this year and last, 71.1% reported higher revenue this year and 93.6% of those reporting profitability status noted profit on international work in 2024.

Backlogs have remained strong for a majority of firms, but the percentage of those showing an increase has fallen over the past few years. Of 185 firms that reported their backlog status on this year’s survey, 65.4% said it is higher than last year. That number was 69.3% and 74.1% on the 2024 and 2023 survey filings, respectively.

The Middle East saw the largest growth between

2023 and 2024, with international design revenue rising nearly 30% in the region, and nearly double since 2021. Major growth was also reported in the U.S. (10.7%), Africa (9%) and Europe (7.6%). Revenue is down signi cantly in the Caribbean (17.4%) and Latin America (15%).

Pace Associate Director Abdullah Abdulaziz Al Shaiji says retail, hospitality, o ce and infrastructure markets represent core strategic sectors for the No. 152 ranked rm.

“ ese sectors are driven by the shi ing of social and economic dynamics in the regions where we oper-

“There is a growing movement toward nuclear power as a key component of the global energy transition and energy sovereignty. ”

Stéphane Aubarbier, Deputy CEO, Assystem

ate and the surge in demand,” he says, attributing growth in these areas to regional reputation and an understanding of macroeconomic trends to align the rm’s design approach to the priorities of local and national agendas.

“ is alignment is achieved through building and retaining internal talent pools specialized in planning and delivering these sectors and driving … engagement with existing and potential clients,” says Shaiji. “Many countries, particularly across the Persian Gulf region, Africa and with emerging economies, are actively pursuing economic diversi cation strategies to reduce reliance on traditional sectors such as oil and gas and extraction and export of natural resources.”

For the Top 225 overall, revenue in the telecommunications market rose 61.7% between 2023 and 2024, with the average international total increasing to $24.28 million from $16.01 million during the same time period. Markets for listed rms all saw doubledigit percentage revenue increases—including sewer/ waste (20.2%), power (18.9%), industrial process (17.7%), general building (16.2%) and water supply (15.8%). However, Top 225 revenue in the oil and gas sector contracted 21.1% between 2023 and 2024.

HOW THE TOP INTERNATIONAL DESIGN FIRMS SHARED THE 2024 MARKET

GHD is engineer for Australia’s first green steel recycling mill in Collie. The

The Top 10 by Market

1 TRANSPORTATION

2 BUILDING

3 OIL & GAS

4 POWER

5 WATER

6 INDUSTRIAL

7 HAZARDOUS WASTE

8 SEWER/WASTE

9 MANUFACTURING

Driving Transformation

With 2050 seen as a key deadline for net-zero emissions for the global energy transition, Top 225 firms involved in the energy sector say they are seeing firsthand how reimagined production is driving market innovation.

“There is a clear and growing movement toward nuclear power as a key component of the global energy transition and energy sovereignty,” says Stéphane Aubarbier, deputy CEO of Assystem, ranked No. 54. He cites the 2023 U.N. Climate Change Conference

(COP28) in Dubai, with over 20 countries pledging to triple nuclear capacity by 2050, as one of several catalysts driving the trend.

“As part of this, there is a trend for existing civil nuclear markets to restart their programs,” says Aubarbier. “We see this in the U.K. following its commitment to build two large scale [pressurized reactors] and small modular reactors, following its selection of Rolls-Royce technology in the government’s recent competition.”

Additionally, the Netherlands has committed to

The Top 10 by Region

1 EUROPE

2 UNITED STATES

3 MIDDLE EAST

4 AUSTRALIA/OCEANIA

RANK

7 AMER./CARIBBEAN

5 ASIA

6 CANADA

8 AFRICA

building two more nuclear power plants that will provide around up to 13% of the country’s electricity production, and Japan is also seeking to restart its nuclear power program.

“These decisions are in response to the current geopolitical climate, and we are observing that the main civil nuclear technology exporters—France, America, Korea, China and Russia—are securing orders with countries where there are strong diplomatic allegiances,” says Aubarbier.

At the other end of the spectrum are under-developed regions where political instability can be a major challenge to getting much-needed projects off the ground.

“To address these challenges, we closely follow political shifts, monitor closely economic parameters and indices and use special security consultants,” says Cem Aker, international projects coordinator at DOLSAR Engineering Inc.

In January, the firm says it signed a provision to

KHATIB & ALAMI is working on the Abu Flous desalination plant in southern Iraq, which is expected to treat 72,000 sq m of water per day.

Bridges | By Jonathan Keller

South Africa Cable-stayed Bridge Will Be Continent’s Longest

Surbana Jurong (No. 24) unit SMEC is providing design services on the Msikaba Bridge in South Africa, with its 530-m composite concrete and steel deck to be supported at both ends by 17 pairs of both mainstay and backstay cables anchored into 127-m-tall reinforced concrete pylons. When complete, the bridge will be both the longest and highest single-span cable-stayed bridge in Africa, the firm says. ■

provide construction supervision services for the repair of Ukraine’s M09 Ternopil-Lviv-Rava-Ruska highway. Aker calls the project, one of the largest commissioned during the ongoing war between Russia and Ukraine, a logistical challenge.

The prolonged Russia-Ukraine war “has affected our business, since in the pre-war period DOLSAR had multiple ongoing projects in Ukraine,” says Aker, adding that shifts in U.S. government policy related to U.S. Agency for International Development and Millennium Challenge Corp. funding have also affected project finance in the country.

Political Shifts

With his firm’s core operations based in the Middle East, Dewan Architects + Engineers CEO Ammar Al Assam says regional projects are especially sensitive to political shifts and changing diplomatic relations that affect financing and investment.

“Geopolitical instability and changing policies in markets such as the U.S. and in Europe have, at times, led to delays in capital deployment and project launches due to heightened uncertainty,” he says.

To mitigate risk and sustain growth, Al Assam says the firm has strategically diversified its portfolio by expanding into more stable markets across Asia. “These are regions that are showing strong momentum and

align well with our capabilities and long-term vision,” he says. The firm is ranked No. 92.

Geopolitical instability around the world has had a “growing impact on the priorities of national governments and how public funds are allocated,” adds Murat Koru, chairman of No. 177-ranked Proyapı Engineering and Consultancy Inc. “In recent years, the increase in military conflicts and the perception of rising global insecurity have led many governments to reassess their budgets,” he contends. “As a result, spending on transportation infrastructure in some regions has been reduced or postponed in favor of initiatives seen as more urgent for national security or defense preparedness.”

At a local level, Top 225 firms say community investment in the form of using local suppliers and talent pools has allowed them to build stronger regional connections to transfer knowledge and build technical capacity where needed.

“Our approach focuses on creating communitycentric designs that celebrate local heritage, foster social interaction and cultivate a strong sense of belonging,” says Matt Squires, CEO of SSH. “By prioritizing use of local materials, suppliers and labor, we help stimulate regional economies and support sustainable community development.”

By prioritizing community investment, design firms can measure successful design and project de-

Education | By Jonathan Keller

JV Contract Aids Refugee School Shortage

Since Syria’s civil war began in 2011, more than 14 million Syrians have had to flee their homes. Over 500,000 refugees are registered in Jordan with the UN High Commissioner for Refugees as of June 30, but estimates that include unregistered refugees suggest up to 1.4 million. About half of registered refugees are age 17 or younger.

The joint venture of Dorsch (No. 32) and Dar Al Omran Rasem Badran (No. 151) won a contract to plan and design up to 23 new schools in Jordan (see above) to accommodate more than 13,000 Jordanian and Syrian children. The contract amount was not disclosed, but Jordanian media report the German Development Bank has provided about $80 million in funding. The European Union is also a major donor.

Siting schools proved a logistical and design challenge, with many locations having “uneven terrain, sharp inclines and soil conditions that

would significantly impact construction cost and feasibility,” says Salam Najjar, Senior Programme Manager at Dorsch Impact.

”Safety is embedded into every detail, from soft-finish materials and rounded corners to wide circulation zones and clear wayfinding systems that reduce stress and risk,” Najjar adds. Lighting, acoustics and ventilation are calibrated to create calm, healthy environments.

Each school includes a dedicated kindergarten section, a first in Jordan’s public school system, Najjar says. Unlike a conventional layout, the section is “physically and functionally distinct.” Schools are set to be net-zero, powered by roof mounted photovoltaic systems and with roof insulation and facade-mounted shades for comfortable indoor temperatures and reduced energy loads. Facilities will also capture and recycle rainwater. ■

livery beyond technical precision, according to EHAF Consulting Engineers, ranked at No. 35.

“We place strong emphasis on aligning our work with the social and cultural context of each project,” says Suha Abou El Fetouh, the firm’s vice president and managing director. He adds that the effort includes “proactive coordination with local authorities, end users and regional stakeholders to ensure our developments reflect everyday needs, values and expectations of their intended users.”

El Fetouh says EHAF Consulting Engineers’ approach often includes early planning coordination, func-

tional programming sessions and design strategies that “promote inclusivity, accessibility and sensitivity to local customs.”

On the Masang-2 hydroelectric power project located in West Sumatra, Indonesia, Haskoning similarly took steps to prioritize accessibility and local customs related to the task of routing transmission lines.

When a route was adjusted, “we re-engaged five affected Nagaris, or customary villages, to transparently communicate changes, validate social baseline data and gather updated input through structured meetings and a community feedback mechanism,” says Mila van Druten, who is climate risk consultant at the No. 41-ranked design firm.

She says the process allowed the firm to advocate for its client, the state-owned power provider, to ensure 24-hour electricity access for the community.

“At the time, electricity in the project area was often only available at certain hours or would go out unpredictably,” van Druten explains. “We brought forward this concern as a community priority. We influenced [the provider’s] decision to plan for expanded distribution, ensuring round-the-clock access.”

Fostering Innovation

Top 225 firms named building information modeling, digital twins, reality capture and carbon management tools among the technologies they are integrating into their operations to extend the capabilities of their companies and add value for clients.

Italferr, ranked No. 142 on the list, says its “advanced progress monitoring” system increases the protection of jobsite workers, enhances work transparency and decreases risks.

“The continuous digital monitoring performed by Italferr teams—including access control to construction sites—not only improves the quality of works but also helps prevent potential criminal or mafia infiltration, in close synergy with competent

authorities,” says CEO Dario Lo Bosco.

Overwhelmingly, arti cial intelligence was named as the technology that rms predicted would have the largest impact on design services.

While some companies are still figuring out how best to apply the technology to their operations, others are quickly moving forward to integrate its use in a range of areas, including recruitment, efficiency tracking, procurement and project planning.

GHD, which is ranked No. 22, says the rm recently collaborated with students at the University of Melbourne in Australia, to explore AI transformation—with a key focus on the technology’s potential e ects on trust, values and human impact.

“Figuring out how to integrate AI with our work in engineering, architecture and environmental consulting is a constant question at the forefront of our business strategy,” GHD chief information ofcer Paul Murphy points out. “Working with these talented students has been incredibly rewarding— their fresh perspectives and innovative ideas have de nitely expanded our thinking.”

Archetype adds that it is also investing in AI and BIM to improve e ciency.

e tools “are now used in our daily operations to improve design e ciency through digital modeling, and to speed up delivery of projects,” says CEO and co-founder Malgouyres. He adds that the rm is also passionate about exploring low-carbon concrete and the use of graphene as an additive to improve its durability.

“ at will totally disrupt the construction industry, and we are proud to be leading this movement,” says the executive.

At Engicon, CEO Tarek Zuriekat contends that

How to Read the Tables

Companies are ranked according to revenue for design services performed in 2024 in $ millions (*). Those with subsidiaries are indicated by (†). For information on subsidiaries and where each firm worked outside of the U.S., see www.enr. com. **Firms not ranked last year. Some markets may not add up to 100% due to omission of “other” miscellaneous market category and rounding. NA-Not available. Key to type of firm A architect, E engineer, EC engineer-contractor, AE architectengineer, EA engineer-architect, ENV

DOLSAR is working on the Diamer Basha Dam in Pakistan. The rollercompacted concrete dam will be 272 m tall when completed.

“How to integrate AI with our work in engineering, architecture and environmental consulting is a constant question.”

Paul Murphy, Chief Information O icer, GHD

conversations focused on climate change and resilience are increasingly becoming deciding factors in design and in determining how innovation is used in a project to decrease risk and adapt to long-term environmental factors that may be challenging.

Climate change is altering “what clients ask for across our international projects,” says Zuriekat. “ ey’re a er climate-adaptive designs that tackle environmental challenges while boosting resilience and e ciency.

He explains that the rm, which is ranked at No. 180, has seen a significant push for water reuse in countries with dwindling resources. is includes decentralized treatment systems and energy-e cient infrastructure that is able to handle scarcity and shiing energy demands.

“We’re bringing in tools like smart water metering and consumption analytics, plus treated wastewater reuse schemes to cut reliance on freshwater,” says Zuriekat.

Overall, he believes that climate change risks ahead are pushing design to be more resilient and sustainable but also to ensure it prioritizes human health and connection. “Our knack for innovative, context-sensitive solutions keeps us leading in global markets,” Zuriekat contends. ■

assembly, textile plants, etc.

environmental, GE geotechnical engineer, GS geospatial, P planner and O other. Other combinations are possible. Firms with too many disciplines to accommodate inline are designated M. Their full lists can be found on the side of each page. Firms classified themselves.

General Building includes commercial buildings, o ices, stores, educational facilities, government buildings, hospitals, medical facilities, hotels, housing, etc.

Manufacturing includes auto, electronic

Power comprises thermal and hydroelectric power plants, waste-to-energy plants, transmission lines, substations, cogeneration plants, etc.

Water Supply includes dams, reservoirs, transmission pipelines, distribution mains, irrigation canals, desalination and potability treatment plants, pumping stations, etc.

Sewage/Solid Waste includes sanitary and storm sewers, treatment plants, pumping plants, incinerators, industrial waste facilities, etc.

Industrial Process includes pulp and

paper mills, steel mills, non-ferrous metal refineries, pharmaceutical plants, chemical plants, food and other processing plants, etc.

Oil & Gas comprises refineries, petrochemical plants, o shore facilities, pipelines, etc.

Transportation includes airports, bridges, roads, canals, locks, dredging, marine facilities, piers, railroads, tunnels, etc.

Hazardous Waste includes chemical and nuclear-waste treatment, asbestos and lead abatement, etc.

Telecommunications includes transmission lines and cabling, data centers, etc.

62 57 CTI ENGINEERING GROUP, Tokyo, Japan †

AJI GROUP is part of the JV providing the masterplan for New Sadr City, a 10-sq-km "self-contained city" outside Baghdad, Iraq.

Where To Find the Top 225

THE TOP 150 GLOBAL DESIGN FIRMS

SETEC acquired a majority stake in Sealand Projects in April, strengthening its marine and offshore wind engineering capabilities.

Where to Find the Top 150

2025 Top 225 International Design Firms – Subsidiaries

Calibre Professional Services One PTY Ltd

Louis Berger (Canada) Limited

Power Engineers, Incorporated

WSP Australia Pty Limited

WSP Canada Inc.

WSP E&I Canada Limited

WSP International LLC

WSP Middle East Ltd.

WSP New Zealand Limited

WSP Sverige AB

WSP UK Limited

WSP USA Buildings Inc.

WSP USA Inc.

WSP USA Solutions Inc. 3 ArcadisNV

ARCADIS Canada Inc.

ARCADIS Chile S.p.A.

Arcadis Architects (Canada) Inc.

Arcadis Australia Pacific Holdings Pty Ltd.

Arcadis Belgium NV

Arcadis Consulting (UK) Limited

Arcadis Consulting Middle East Ltd.

Arcadis France S.A.S.

Arcadis Germany GmbH

Arcadis Hong Kong Ltd.

Arcadis Inc. (formerly: CallisonRTKL Inc.)

Arcadis LLP

Arcadis Logos S.A.

Arcadis Nederland BV

Arcadis Professional Services (Canada) Inc.

Arcadis Shanghai Ltd.

Arcadis US, Inc

Arcadis, a California Partnership

DPS Advanced Technology Group Inc.

DPS Engineering & Construction Limited

DPS Group Inc.

White Rock Insurance (Netherlands) Pcc Limited

Atkins China Limited

Atkins International Holdings Limited

Atkins North America

Atkins Nuclear Secured Holdings Corporation

Candu Energy Inc.

Linxon Gulf LLC

Linxon Pvt Ltd

Protrans BC Operations Ltd

SNC-Lavalin Inc

Atkins Limited

Faithful+Gould Limited

Faithful+Gould Saudi Arabia Limited

Stantec Architecture Inc.

Stantec Architecture Ltd.

Stantec Australia Pty Ltd.

Stantec Consulting Ltd.

Stantec Consulting Michigan Inc.

Stantec Consulting Services Inc

Stantec Geomatics Ltd

Stantec International Inc.

Stantec New Zealand

Stantec UK Ltd

Fluor Constructors International Inc

Fluor Enterprises Inc.

Copper Tree

Currie and Brown

Dar Al Handasah Consultants Shair and Partners

Maffeis

Penspen

Perkins and Will

SU YAPI

TYLIN International

2025 Top 225 International Design Firms – Subsidiaries

RankCompany Subsidiary

10 TechnipEnergies

Chiyoda Technip Joint Venture

T.EN Netherlands B.V

Technip Energies France

Technip Energies India Limited

Technip Energies Italy S.p.A

Technip Energies SWPT

12 RambollGroup

Henning Larsen Architects A/S

Ramboll Accredited A/S

Ramboll Finland Oy

Ramboll GmbH

Ramboll Singapore Pte Ltd

Ramboll Sweden AB

Ramboll UK Holding Ltd.

Ramboll USA Inc

Rambøll Danmark A/S

Rambøll Management Consulting A/S

Rambøll Norge AS 14 ChinaEnergyEngineeringCorp.Ltd.

China Energy Engineering Group Eastern Construction & Investment Co., Ltd

China Energy Engineering Group Equipment Co., Ltd.

China Energy Engineering Group North Construction and Investment Co., Ltd

China Energy Engineering Group Northwest Construction & Investment Co., Ltd

China Energy Engineering Group Southern Construction & Investment Co., Ltd

China Energy International Group Co., Ltd

China Gezhouba Group Company Limited

China Power Engineering Consulting (Group) Co., ltd.

15 PowerConstructionCorp.ofChina

HydroChina International Engineering Co., Ltd.（ HYDROCHINA）

PowerChina Hubei Engineering Co., Ltd. (HYPEC）

RankCompany Subsidiary

SEPCO Electric Power Construction Corporation（

SEPCO）

SEPCOIII Electric Power Construction Co., Ltd.（

SEPCOIII）

STECOL Corporation（STECOL）

Sinohydro Co., Ltd.（SINOHYDRO）

YELLOW RIVER Co., Ltd.(YELLOWRIVER)

17 EgisGroup

10 Design USA

Atrix

Blezat

Dar Al-Derasat Al-Omrania Company

EGIS Beijing Engineering Consulting

Egis Africa

Egis BLN USA

Egis Canada

Egis Colombia

Egis D.O.O Beograd

Egis Engenharia E Consultoria

Egis Engineering Consultancy

Egis Engineering Egypt

Egis Engineering Ireland Holdngs

Egis India Consulting Engineers Pvt Ltd

Egis Middle East Engineering Consultancy

Egis NZ

Egis PTY

Egis Poland

Egis Project Management

Egis Rail Ltd

Egis Rail Philippines

Egis Rail USA

Egis Romania

Egis SA

Egis Saudi Arabia Engineering Consultancy

Egis Singapore

Egismex

Fenwick Iribarren

Galson Sciences

ISIS Belgique

Inhabit Limited

J.B. Barry Transportation

2025 Top 225 International Design Firms – Subsidiaries by

RankCompany Subsidiary

PT Egis International Indonesia

SB Architects

SVN Architects + Planners

Ten Design Group

Thomas & Adamson International

WestonWilliamson+Partners

18 MottMacDonald

Merz and McLellan Botswana (Pty) Ltd

Mott MacDonald (Beijing) Ltd

Mott MacDonald (Bulgaria) EOOD

Mott MacDonald (Malaysia) Sdn. Bhd.

Mott MacDonald (Philippines) Inc

Mott MacDonald (SL) Lld

Mott MacDonald (Thailand) Ltd

Mott MacDonald Australia (Pty) Ltd

Mott MacDonald BV

Mott MacDonald Blantyre Ltd

Mott MacDonald CZ, spol. s r.o.

Mott MacDonald Canada Ltd

Mott MacDonald France SAS

Mott MacDonald Group Inc

Mott MacDonald Holdings (South Africa) (Pty) Ltd

Mott MacDonald Hong Kong Ltd

Mott MacDonald Ireland Ltd

Mott MacDonald Italy S.r.l.

Mott MacDonald Japan K K

Mott MacDonald Kazakhstan LLP

Mott MacDonald Kenya Ltd

Mott MacDonald Korea Limited

Mott MacDonald Limited

Mott MacDonald Limited LLC for Engineering Consultancy

Mott MacDonald Magyarország KFT

Mott MacDonald Mongolia LLC

Mott MacDonald Mozambique Lda

Mott MacDonald New Zealand Ltd

Mott MacDonald Norge AS

Mott MacDonald Polska Sp. z.o.o.

Mott MacDonald Pvt Ltd

Mott MacDonald Romania SRL

Mott MacDonald S d.o.o.

Mott MacDonald Singapore Pte Ltd

RankCompany Subsidiary

Mott MacDonald Spain S.L.U

Mott MacDonald T Engineering Consultants Ltd

Mott MacDonald, Inc.

PT Mott MacDonald Indonesia

Taiwan Mott MacDonald Ltd

20 HatchLtd.

Hatch AB

Hatch Africa (Pty) Ltd

Hatch Asociados SA

Hatch Associates Consultants Inc.

Hatch Associates India Private Limited

Hatch Associates Limited

Hatch Consultoria em Projectos LTDA

Hatch Corporation

Hatch Indisa S.A.S.

Hatch Ingenieros y Consultores Ltd

Hatch Kuetner

Hatch Ltd

Hatch Nouvelle Caledonie

Hatch Pte Ltd Singapore

Hatch Pty Ltd

Hatch Pty Ltd Abu Dhabi Branch

Hatch Saudi Arabia LLC

Hatch Sp. z.o.o

21 SYSTRA

Systra MVA

Systra SWS

Systra USA

22 GHD

CRA Landfill Operations Ltd

GHD (Fiji) Pte Ltd

GHD (PNG) Ltd

GHD Australia Pty Ltd

GHD Consultants Ltée/GHD Consultants Ltd

GHD Consulting Services Inc.

GHD Contractors Limited

GHD Design Pty Ltd

GHD Digital (Canada) Limited

2025 Top 225 International Design Firms – Subsidiaries by Rank

RankCompany Subsidiary

GHD Entrepreneurs (Quebec) Ltée/GHD

Contractors (Quebec) Ltd

GHD Global Pty Ltd

GHD Inc.

GHD Limited

GHD Livigunn Limited

GHD Pte Ltd

GHD Pty Ltd

GHD S.A.

GHD Services Inc.

Gutteridge Haskins & Davey Limited

23 Larsen&ToubroLtd.

. L&T - MHI Power Turbine Generators Private Limited

. L&T Hydrocarbon Saudi Company

L&T - MHI Power Boilers Private Limited

L&T Construction Equipment Limited

L&T Geostructure Private Limited

L&T Howden Private Limited

L&T MBDA Missile Systems Limited

L&T Metro Rail (Hyderabad) Limited

L&T Modular Fabrication Yard LLC

L&T Power Limited

L&T Realty Developers Limited

L&T Valves Arabia Manufacturing LLC

L&T Valves Limited

Larsen & Toubro (Oman) LLC

Larsen & Toubro Heavy Engineering LLC

Larsen & Toubro International FZE

Nabha Power Limited

24 SurbanaJurongPrivateLtd.

ACE Consultants Limited

Atelier Ten (Asia) Pte. Ltd.

Atelier Ten (Scotland) Limited

Atelier Ten Australia Pty Ltd

Atelier Ten International Limited

Atelier Ten LLC

Atelier Ten Limited

Atelier Ten London Limited

RankCompany Subsidiary

B+H Architects (Washington) LLC

B+H Architects Corp.

B+H Architects Inc.

B+H Consulting Holdings Inc

B+H Consulting International Inc.

B+H International Corp.

BH Architects (Hong Kong) Ltd.

Prostruct Consulting Pte Ltd

Robert Bird & Partners Ltd

Robert Bird Group Pty Ltd

Robert Bird Group Pty Ltd (Dubai Branch)

SAA Architects Pte Ltd

SMEC (Malaysia) SDN Berhad

SMEC Asia Limited

SMEC Australia Pty Limited

SMEC Chile Limitada

SMEC India (Pvt) Ltd

SMEC International Pty Limited

SMEC Philippines Inc.

SMEC South Africa Pty Ltd

Surbana (Shanghai) Planning & Design Consultants Ltd

Surbana Consultants Pte Ltd

Surbana Consultants Sdn Bhd

Surbana International Consultants (Malaysia) Sdn Bhd

Surbana Jurong Consultants Pte Ltd

Surbana Jurong Infrastructure Pte Ltd 25 MaireSpA

KT GROUP

NEXTCHEM GROUP

TECNIMONT GROUP

COWI COWI AB

COWI AS

COWI Architecture/Arkitema

COWI North America Ltd

2025 Top 225 International Design Firms – Subsidiaries

RankCompany Subsidiary

COWI North America Ltd

COWI UK Limited

27 Artelia

ARTELIA Canada

ARTELIA Denmark

ARTELIA SAS

Artelia Italy

Dr Techn Olav Olsen

Pick Everard

28 ChinaNationalChemicalEng'gGroup Corp.Ltd.

CNCEC 11th Construction Co., Ltd.

CNCEC 13th Construction Co., Ltd.

CNCEC 14th Construction Co., Ltd.

CNCEC 16th Construction Co., Ltd.

CNCEC 2nd Construction Co., Ltd.

CNCEC 3rd Construction Co., Ltd.

CNCEC 4th Construction Co., Ltd.

CNCEC 6th Construction Co., Ltd.

CNCEC 7th Construction Co., Ltd.

CNCEC 9th Construction Co., Ltd.

China Chengda Engineering Co., Ltd.

China National Chemical Civil Engineering Co., Ltd.

China National Chemical Engineering International Co., Ltd.

China National Equipment Technology Group Co., Ltd.

China Tianchen Engineering Co., Ltd.

China Wuhuan Engineering Co., Ltd.

East China Engineering Science and Technology Co., Ltd.

Hualu Engineering Co., Ltd.

Sedin Engineering Co., Ltd.

29 Bechtel

BNT International Company

Bechtel Construction Operation, Inc.

Bechtel Corporation

RankCompany Subsidiary

Bechtel Global Energy, Inc.

Bechtel Global Infrastructure & Minerals Inc.

Bechtel India Private, Ltd.

Bechtel Nuclear, Security & Environmental, Inc.

31 TractebelEngineering

IMDC NV

RED Engineering

Tractebel Engineering GmbH

Tractebel Engineering Ltda

Tractebel Engineering PVT Ltd.

Tractebel Engineering S.A.

Tractebel Engineering SA

Tractebel Engineering a.s.

32 DorschGlobalGmbH

Alfa Tech Consulting Engineers Inc.

DC Abu Dhabi

Dorsch Asia

Dorsch Emirates GmbH

Dorsch Holding GmbH - KSA (Saudi) LLC

Dorsch Impact GmbH

Dorsch India

Dorsch Qatar LLC

Engineering Consultants Group

Engineering Consultants Group ECG, S.A.E.

Engineering Consultants Group, Sole Proprietorship

Krebs+Kiefer Ingenieure GmbH

McBains Limited

Pell Frischmann Consultants Ltd

Intertek-ATI

Intertek-MT Group

Intertek-PSI

2025 Top 225 International Design Firms – Subsidiaries

36 Khatib&Alami

CONSOLIDATED ENGINEERING CO. (KHATIB & ALAMI)

CONSOLIDATED ENGINEERING CO. (KHATIB & ALAMI) L.L.C.

CONSOLIDATED ENGINEERING COMPANY (KHATIB & ALAMI) S.A.L.

Information & Communication Technology Digital

Innovation Company

Innovation Solutions Engineering Consultancy Co

KHATIB & ALAMI AND PARTNERS L.L.C.

KHATIB & ALAMI CONSULTING ENGINEERS

OFFSHORE S.A.L.

KHATIB & ALAMI CONSULTING ENGINEERS

OFFSHORE S.A.L.

KHATIB & ALAMI CONSULTING ENGINEERS

OFFSHORE S.A.L.

KHATIB & ALAMI MISR ENGINEERING

CONSULTANTS L.T.D.

Khatib & Alami Consolidated Engineering Company S.A.L

Khatib & Alami Consolidated Engineering Company S.A.L.

Khatib & Alami Consolidated Engineering Offshore S.A.L

Khatib & Alami Engineering Consultants P.V.T. Ltd.

SAUDI CONSOLIDATED ENGINEERING COMPANY (KHATIB & ALAMI)

RankCompany Subsidiary

QUARK PORTUGAL UNIPESSOAL LTDA

QUARK UNLIMITED ENGINEERING, S.L.

SENER AEROESPACIAL S.A.

SENER ARABIA SAUDI

SENER EGYPT

SENER ENERGY LTD UK

SENER ENERGY USA, INC.

SENER ENGENHARIA E SISTEMAS LTDA

SENER ENGINEERING & SYSTEMS INC.

SENER ENGINEERING & SYSTEMS, LTD

SENER ENGINEERING AND CONSTRUCTIONS

SOUTH AFRICA PROPIETARY LIMITED

SENER ENGIVIA-CONSULTORES DE ENGENHARIA S.A.

SENER ETHYLENE TERMINAL (SENER FRANCIA)

SENER INGENIERIA Y SISTEMAS S.A.

SENER KWK PROJEKTE DEUTSCHLAND GMBH

SENER MOBILITY ENGINEERING PANAMA, S.A.

SENER MOBILITY REGIONAL HEADQUARTERS CO.

SENER MOBILITY S.A.

SENER SERAING CCGT

SENER SES CANADA, INC.

SENERMEX ENERGY S.A. de C.V.

SENERMEX INGENIERÍA Y SISTEMAS, S.A. de C.V.

SETEPLA TECNOMETAL ENGENHARIA S.A.

TACTIX SENER GROUP

39 ID&EHoldings

BDP Holdings Ltd.

Koei Africa Co., Ltd.

Koei Research Institute International Corp.

Nippon Civic Consulting Engineers Co.,Ltd

Nippon Koei Bangladesh Ltd.

Nippon Koei Energy Solutions Co., Ltd.

Nippon Koei India Pvt., Ltd.

Meinhardt EPCM

Meinhardt Facade

Meinhardt

Nippon Koei LAC do Brazil Ltda.

Nippon Koei Latin America-Caribbean Co., Ltd.

Nippon Koei Mozambique, LTDA.

Nippon Koei Urban Space Co., Ltd.

PT. Indokoei International

2025 Top 225 International Design Firms – Subsidiaries

RankCompany Subsidiary

40 ILFConsultingEngineers

ILF Beratende Ingenieure AG

ILF Consultants Inc.

ILF Consulting Engineers (Asia) Ltd.

ILF Consulting Engineers Australia Pty Ltd

ILF Consulting Engineers Germany GmbH

ILF Consulting Engineers Ltd.

ILF Consulting Engineers Polska SP. z o.o.

ILF Consulting Engineers Romania S.R. L.

ILF Consulting Engineers for Engineering Consultancy LLC

ILF Engineers Nigeria Ltd.

ILF Ingenería Chile Limitada

ILF Kazakhstan LLC

41 Haskoning

Haskoning Australia Pty Ltd.

Haskoning India Consulting Private Limited

Haskoning Nederland B.V.

Haskoning UK Ltd.

Haskoning Vietnam Co. Ltd.

PT. Haskoning Indonesia

42 IDOM

IDOM Chile

IDOM Colombia

IDOM Inc

IDOM KSA

IDOM Mexico

IDOM Peru

IDOM Poland

IDOM UK

43 AYESA

ADP Consulting

Alia Gestión Integral de Servicios, S.L.U.

Atech Advanced Solutions, S.A.U.

Atech BPO Marruecos, S.A.R.L.

Ayesa Algérie S.A.R.L.

RankCompany Subsidiary

Ayesa Architectural Engineering Consultants Company, LLC

Ayesa Chile SpA

Ayesa Implementaciones Tecnológicas, S.A.U.

Ayesa India Private LTD

Ayesa India Pvt. Ltd.

Ayesa LTD

Ayesa Maroc S.A.R.L.

Ayesa México S.A. de C.V.

Ayesa Perú, S.A.

Ayesa Polska Sp. z o.o.

Ayesa Projetos Industriais e Participaçoes LTDA

Ayesa Tecnologia Chile, S.P.A.

Ayesa Tecnología México S.A. de C.V.

Ayesa USA, CORP

Ayesa de Colombia Ingeniería y Arquitectura SAS

BLP Shared Services Limited

ByrneLooby CORE

Sistemas Comerciales de Brasil TI, LTDA

44 TecnicayProyectosSA(TYPSA)

AGRER

AZTEC

EDG

ENGECORPS

INTEMAC MC2

MEXTYPSA

RAUROS

TECNOFISIL

TYPSA AB

TYPSA DIGITAL SOLUTIONS

TYPSA LIMITED

TYPSA PERU

46 ChinaCommunicationsConstruction GroupLtd.

CCCC Investment Company Limited

CCCC CHEN'ZHOU ROAD CONSTRUCTION MACHINERY CO. LTD.

CCCC Dredging (Group) Company Limited

2025 Top 225 International Design Firms – Subsidiaries by Rank

RankCompany Subsidiary

CCCC EAST CHINA INVESTMENT CO.,LTD

CCCC First Habor Consultants Co.,Ltd.

CCCC First Habor Engineering Company Ltd.

CCCC First Highway Consultants Co.,Ltd.

CCCC First Highway Engineering Group Co.,Ltd.

CCCC Forth Highway Engineering Co.,Ltd.

CCCC Fourth Habor Engineering Co.,Ltd.

CCCC HAIXI INVESTMENT COMPANY LTD.

CCCC Highway Consultants Co.,Ltd.

CCCC INFRASTRUCTURE MAINTENANCE GROUP CO.,LTD

CCCC INTERNATIONAL HOLDING LIMITED

CCCC Mechanical & Electrical Engineering Co.,Ltd.

CCCC Northeast Investment Co.,Ltd.

CCCC Ocean Investment Holding Company Limited

CCCC RAILWAY CONSULTANTS GROUP CO.,LTD

CCCC Second Habor Engineering Co.,Ltd.

CCCC Second Harbor Consultants Co.,Ltd.

CCCC Second Highway Consultants Co.,Ltd.

CCCC Second Highway Engineering Co.,Ltd.

CCCC Southwest Investment and Development Co.,Ltd.

CCCC Third Harbor Consultants Co.,Ltd.

CCCC Third Harbor Engineering Co.,Ltd.

CCCC Third Highway Engineering Co.,Ltd.

CCCC Tianhe Mechanical Equipment Manufacturing Co.,Ltd.

CCCC Urban Investment Holding Company Limited

CCCC WATER TRANSPORTATION CONSULTANTS Co.,LTD

CCCC Xi'an Road Construction Machinery Co.,Ltd.

CCCC-FHDI Engineering Co.,Ltd.

CCCG INVESTMENT HOLDING COMPANY LTD.

China Harbour Engineering Company ltd.

China Highway Engineering Consultants Corporation

China Highway Vehicle and Machinery Co.,Ltd.

Chuwa Bussan Co.,Ltd.

ROAD&BRIDGE INTERNATIONAL CO.,LTD

Shanghai zhenhua Heavy Industries Co.,Ltd.

RankCompany Subsidiary

47 HDR

HDR Architecture Associates, Inc.

HDR Architecture, Inc.

HDR Construction Control Corp.

HDR Consulting Limited

HDR Consulting PTE LTD

HDR Corp.

HDR Corp. Pty. Ltd.

HDR Engineering, Inc.

HDR Environmental, Operations and Construction

HDR Middle East LLC

48 SamsungE&ACo.Ltd.

Asociados Constructores DBNR, S.A. de C.V.

Grupo Samsung E&A Mexico S.A. de C.V.

Muharraq Wastewater Services Company W.L.L

SVIC 51th New Technology investment association

SVIC 61th New Technology investment association

Samsung Arabia Co., Ltd

Samsung E&A (Thailand) Co., Ltd.

Samsung E&A America Construction LLC

Samsung E&A America Inc.

Samsung E&A Bolivia S.A

Samsung E&A DUBA S.A. de C.V.

Samsung E&A Energia S.A. de C.V.

Samsung E&A Global Private Limited

Samsung E&A Hungary Co. Ltd.

Samsung E&A India Private Limited

Samsung E&A Louisiana Construction LLC

Samsung E&A Malaysia SDN. BHD.

Samsung E&A Manzanillo S.A. de C.V.

Samsung E&A Mexico S.A. de C.V.

Samsung E&A Shanghai Co., Ltd

Samsung E&A Vietnam Co., Ltd.

Samsung E&A Xi'An Co., Ltd

Samsung EPC Co., Ltd

Samsung Engineering Italy S.R.L.

Samsung Engineering Kazakhstan LLP

Samsung Engineering Trinidad Co., Ltd.

Samsung Project Management Inc.

2025 Top 225 International Design Firms – Subsidiaries

RankCompany Subsidiary

TPF CONSULTORES

TPF ENGENHARIA

TPF ENGINEERING

TPF ENGINEERING PVT

TPF INGENIERIA

TPF INGENIERIE

TPF INGINERIE

TPF SP, Z.O.O

TPF UTILITIES

50 BilfingerEngineering

Bilfinger E&M Nordics AB

Bilfinger E&M Nordics AS

Bilfinger Engineering & Maintenance GmbH

Bilfinger Nuclear & Energy Transition GmbH

Bilfinger Tebodin & Partners

Bilfinger Tebodin Belgium NV

Bilfinger Tebodin Czech Republic s.r.o.

Bilfinger Tebodin Hungary Kft.

Bilfinger Tebodin Middle East Ltd.

Bilfinger Tebodin Netherlands B.V.

Bilfinger Tebodin Poland Sp. z o.o.

Bilfinger Tebodin Romania S.R.L.

Bilfinger Tebodin Slovakia s.r.o.

Bilfinger Tebodin Ukraine CFI

Bilfinger Tebodin d.o.o

Bilfinger UK Limited

51 Black&Veatch

Bird Electric

Black & Veatch Construction, Inc.

Black & Veatch Corporation

Black & Veatch International

Black & Veatch LTD of Michigan

Black & Veatch Management Consulting, LLC.

Black & Veatch New York LLP

RankCompany Subsidiary

Black & Veatch Special Projects Corp

Overland Contracting, Inc.

53 ChinaPetroleumEngineeringCo.Ltd.

China HuanQiu Contracting & Engineering Corp., Ltd

China KunLun Contracting & Engineering Corporation

China Petroleum Engineering & Construction Corporation

China Petroleum Pipeline Engineering Co., Ltd

54 Assystem

AEIL

AEOS

Assystem India

Assystem Project Management (APM)

Assystem Radicon

Assystem Stup

Assystem Türkiye

Logikal

Relsafe

UzAssystem 56 OrientalConsultantsGlobal(OCHD)

ATEC CO.,Ltd.

Asano Taisei Kiso Engineering Co.,Ltd.

Chuou Sekkei Engineering Co.,Ltd.

Oriental Consultants CO.,Ltd.

Oriental Consultants Global CO.,Ltd.

Research & Solution CO.,Ltd.

57 RINAConsultingSpA

PATRICK ENGINEERING INC.

RINA CONSULTING - CSM S.P.A.

RINA CONSULTING S.P.A.

RINA TECH GERMANY GMBH

RINA TECH UK LIMITED

RINA TECH USA INC.

2025 Top 225 International Design Firms – Subsidiaries

RankCompany Subsidiary

58 ColliersEngineering&Design

Colliers Engineering & Design Australia

Colliers Project Leaders

Colliers Project Leaders | USA

Englobe

60 CDMSmith

CDM Constructors Inc.

CDM Federal Programs

CDM International

The Perry Group

Trinnex

61 FichtnerGroup

Dipl. Ing. Ruppmann Verbrennungsanlagen GmbH

Fichtner Australia Pty Ltd.

Fichtner Bauconsulting GmbH

Fichtner Baustellenservices GmbH

Fichtner Consulting Engineers (India) Pvt. Ltd.

Fichtner Consulting Engineers Ltd.

Fichtner GmbH & Co. KG (Head office)

Fichtner IT Consulting GmbH

Fichtner Italia s.r.l.

Fichtner Macau Consultoria de Engenharia e Gestao, Ltd.

Fichtner Management Consulting AG

Fichtner Management Consulting AG Schweiz

Fichtner Pacific Engineers Inc.

Fichtner Recuperación de Energía S.A.U.

Fichtner Vietnam Company Limited

Fichtner Water & Transportation GmbH

Fichtner Water & Wind GmbH

GefaÖ mbH

Ingenieur- und Planungsbüro Lange GmbH & Co. KG

RankCompany Subsidiary

HIROKEN CONSULTANTS Co.,LTD.

Japan Urban Engineering Co.,Ltd.

NISSOKEN ARCHITECTS&ENGINEERS Co.,Ltd.

Waterman Group Plc

63 SETEC

ALPIN

BMCI

DIADES

GOMEZ CAJIAO

GOMEZ CAJIAO PEROU

HYDRATEC

LERM

SERIGE

SETEC ALS

SETEC BATIMENT

SETEC CAMEROUN

SETEC CANADA INC.

SETEC CH

SETEC CONGO

SETEC CONSULTING ENGINEERS LTD

SETEC COTE D'IVOIRE

SETEC ENERGIE ENVIRONNEMENT

SETEC EOCEN

SETEC EOCEN GMBH

SETEC FERROVIAIRE

SETEC HIDROBRASILEIRA

SETEC IA

SETEC INTER TCHEQUIE

SETEC INTERNATIONAL

SETEC ITS

SETEC MAROC

SETEC MAURITIUS

SETEC MIS

SETEC MONACO

SETEC MTP

SETEC NUCLEAIRE

SETEC OPENCY

CTIEngineeringGroup

CTI Engineering Co., Ltd.

CTI Engineering International Co.,Ltd.

Chi-ken Sogo Consultants Co.,Ltd.

Environmental Research & Solutions Co.,Ltd.

SETEC ORGANISATION

SETEC TPI

SETEC TPI GRECE

SETEC TPI KSA CONSULTING ENGINEERS

SETEC TUNISIE

2025 Top 225 International Design Firms – Subsidiaries

China Railway First Survey and Design Institute Group Co., Ltd.

China Railway Fourth Survey and Design Institute Group Co., Ltd.

China Railway Harbour & Channel Engineering Bureau Group Co., Ltd.

China Railway Investment Group Co., Ltd.

China Railway Maglev Rail Investment Co., Ltd

China Railway Shanghai Design Institute Group Co., Ltd.

China Railway South Construction Investment Co., Ltd

CRCC International Investment Ltd.

China Civil Engineering Construction Corporation

China Railway 11th Bureau Group Co., Ltd.

China Railway 12th Bureau Group Co., Ltd.

China Railway 14th Bureau Group Co., Ltd.

China Railway 15th Bureau Group Co., Ltd.

China Railway 16th Bureau Group Co., Ltd.

China Railway 17th Bureau Group Co., Ltd.

China Railway 18th Bureau Group Co., Ltd.

China Railway 19th Bureau Group Co., Ltd.

China Railway 20th Bureau Group Co., Ltd.

China Railway 21th Bureau Group Co., Ltd.

China Railway 22th Bureau Group Co., Ltd.

China Railway 23th Bureau Group Co., Ltd.

China Railway 24th Bureau Group Co., Ltd.

China Railway 25th Bureau Group Co., Ltd.

China Railway Capital Operation Group Co., Ltd.

China Railway Construction Bridge Engineering Bureau Group Co., Ltd.

China Railway Construction Corporation (International) Limited.

China Railway Construction Group Co., Ltd.

China Railway Construction Kunlun Investment Co., Ltd

China Railway Construction North Investment Development Co., Ltd

China Railway Construction Southern Investment Group Co., Ltd

China Railway Electrification Bureau Group Co., Ltd.

China Railway Fifth Survey and Design Institute Group Co., Ltd.

China Railway Urban Construction Group Co., Ltd. 67 BecaGroupLtd.

Beca Carter Hollings & Ferner (S.E. Asia) Pte Ltd

Beca Limited Beca Pty Ltd

68 Drees&Sommer

Drees & Sommer España S.L.

Drees & Sommer France S. à r. l.

Drees & Sommer GmbH

Drees & Sommer Hellas M.E.P.E.

Drees & Sommer Hungária Kft.

Drees & Sommer Italia Engineering S.r.l.

Drees & Sommer Luxembourg SARL

Drees & Sommer Netherlands

Drees & Sommer Nordic A/S

Drees & Sommer Polska Sp.z.o.o.

Drees & Sommer Projekt und bautechnische Beratung GmbH

Drees & Sommer SE

Drees & Sommer Schweiz AG

Drees & Sommer UK Ltd.

Drees & Sommer US Inc.

Sprl Drees & Sommer

69 Burns&McDonnell

2025 Top 225 International Design Firms – Subsidiaries by

RankCompany Subsidiary

70 PMGroup

PM Architectural Engineering Consulting (Shanghai) Co Ltd

PM Asia Project Services PTE Limited

PM Group Belgium Services NV/SA

PM Group Denmark ApS

PM Group Netherlands BV

PM Group Polska

PM Group Project Services Germany GmbH

PM Group USA Inc

PM PROjEN

PM Project Services Limited

PM Site Services Limited (Swiss Branch)

PM Site Services Limited, Italian Branch, Milano

Project Management Engineering Services India Limited

Project Management Holdings Ltd t/a PM Group

Project Management Limited

71 INGEROP

ACTIERRA

ARCORA

ATELIER DES TERRITOIRES

AVLS

Aspec

CICAD

DELTAEDRE ENGINEERING

Evectra

GLI

GÉOS FRANCE

GÉOS SUISSE

ILS

INGÉROP BELGIUM

INGÉROP BULGARIE

INGÉROP CANADA

INGÉROP CHILE

INGÉROP CONSEIL & INGÉNIERIE

INGÉROP CONTRACTING

INGÉROP DEUTSCHLAND

INGÉROP ENGINEERING

INGÉROP INTERNATIONAL CONSULTANTS

INGÉROP LATVIA

RankCompany Subsidiary

INGÉROP Monténégro

INGÉROP POLSKA

INGÉROP T3

Ingerop Mexico

Ingérop

Ingérop Africa Ingénierie

Ingérop East Africa

Ingérop Rendel

Ingérop South Africa

Intec

Leedeo

MAZET

RENDEL

Rendel Ingerop Ireland

SGI SUISSE

Smart2

TR&S

72 SkidmoreOwings&Merrill

SOM (Guangdong) Design Consultants Co., Ltd

SOM Asia Limited

Skidmore, Owings & Merrill (Australia) Pty. Ltd

Skidmore, Owings & Merrill (Europe) LLP

Skidmore, Owings & Merrill (Shanghai) Architects Co. Ltd

Skidmore, Owings & Merrill LLP

73 Sargent&Lundy

Sargent & Lundy Canada Company

Sargent & Lundy Engineering Services, Inc.

Sargent & Lundy Engineers, Ltd.

Sargent & Lundy, LLC

74 AssociatedConsultingEngineers

ACE ABU DHAQBI

ACE BAHRAIN

ACE DUBAI

ACE IRAQ

ACE KUWAIT

ACE LEBANON

ACE OMAN

2025 Top 225 International Design Firms – Subsidiaries

RankCompany Subsidiary

ACE SAUDI ARABIA

SIR FREDERICK SNOW

75 ChinaNationalMachineryIndustry Corp.

AUTOMOTIVE ENGINEERING CORPORATION

China CACS Engineering Corporation

China CAMC Engineering Co., Ltd

China Machinery Engineering Corp.

China Machinery Industry Construction Group inc.

China National Complete Engineering Corporation (CCEC)

China National Electric Engineering Co., Ltd.

China National Heavy Machinery Corporation

China Ocean Aviation Group Limited

China Perfect Machinery Industry Corp.,Ltd

SCIVIC ENGINEERING CORPORATION

SIPPR Engineering Group Co., Ltd

SUMEC Corporation Limited

76 ItalconsultSpA

Boswell Engineering

Studio Altieri S.p.A.

78 VersarGlobalSolutions

Berger Cummins JV

LBPKSA

Swift River Versar SB JV

VGS Aircraft Services

VGS Infrastructure Services

Versar National Security Solutions LLC

Versar Security Systems LLC

Versar, Inc

Versar-Arcadis JV

Versar-Envirocon JV

79 ARXGroup(formerlyPiniGroup)

ARX Engineering Consultancy

ARX France SAS

ARX Group SRL

RankCompany Subsidiary

ARX Österreich GmbH

Airport Competence GmbH

Anastasi & Partners SA

BWB Ingenieurbüro SRL

Geodata Engineering Pty

Ingeconsult Cia. Ltda

JLCM Lda

KHR Architecture

Pini Australia Pty

Pini France Engineers SA

Pini Group Brasil LTD

Pini Group Tirana

Pini Group USA Inc.

Pini India Private Ltd

Pini Israel Ltd

Pini Norge AS

SERS Sarl

80 GeosyntecConsultants

Applied Technology and Management, Inc.

Aspect Consulting, LLC

Geosyntec (Bahamas) Limited

Geosyntec Consultants Finland Oy AB

Geosyntec Consultants Iberia, S.L.

Geosyntec Consultants International, Inc.

Geosyntec Consultants Pty. Ltd.

Geosyntec Consultants, Ltd.

Geosyntec GEMS, LLC

GradCo, LLC dba Gradient

Red Earth Engineering Pty. Ltd.

81 MetallurgicalCorp.ofChinaLtd.

ACRE Coking & Refractory Engineering Consulting Corporation, MCC(Dalian)

CHINA HUAYE GROUP COMPANY LIMITED

CISDI Engineering Co., Ltd.

CISDI Thermal & Environmental Engineering Co., Ltd.

Capital Engineering and Research Inc.

China 19th Metallurgical Corporation

China 22mcc Group Corporation Ltd.

China ENFI Engineering Corp.

2025 Top 225 International Design Firms – Subsidiaries by Rank

RankCompany Subsidiary

China First Metallurgical Group CO., Ltd

China Jingye Engineering Construction Contraction Corp.

China Metallurgical Construction Engineering Group Co., Ltd.

China Metallurgical Group Corporation

China Second Metallurgical Group Corporation Limited

Chongqing CISDI Engineering Consulting Co., Ltd.

MCC BAOsteel Technology Services Co.,LTD

MCC Changtian Int’l Engineering Co., Ltd.

MCC Group Wuhan Surveying Geo-Technical Research Institute

MCC Huatian Engineering Technology Co., Ltd.

MCC5 Group Corporation Limited(Shanghai)

Ma Anshan Maishiji Engineering Consulting Co., Ltd

Northern Engineering & Technology Corporation , MCC

Shanghai Baoye Construction Co., Ltd.

The 17th China Metallurgical Construction Corporation

The 20th China Metallurgical Construction Co., Ltd.

The 23th Metallurgical Construction Group CO.,LTD. Of Minmetals

The 3rd China Metallurgical Construction Corporation

WISDRI Engineering & Research Incorporation Ltd.

82 NORR

Cion Corp.

NORR Architects & Engineers Limited

NORR Architects Engineers Planners

NORR Associates Inc.

NORR Consultants Limited

NORR Design Inc.

NORR Group

NORR Inc.

NORR LLC

NORR Limited

RankCompany Subsidiary

83 Woolpert

AAM

CivilTech Engineering

Cooperative Strategies

Data Cloud Solutions

Greenbox Architecture

Jviation

Murphy Geospatial

Optimal Geo

Sheehan Nagle Hartray Architects (SNHA)

Southern Mapping Company

Woolpert Canada

eTrac

84 ChinaAluminumInternationalEng'g Corp.Ltd.

CINF Engineering Corporation Limited

China Nonferous Metals Processing Technology Co.Ltd

China Nonferrous Metal Industrial No .12

Metallurgy Construction Company

China Nonferrous Metal Industrial No .12

Metallurgy Construction Company

China Nonferrous Metal Industrial No .6

Metallurgy Construction Company

Guiyang Aluminum & Magnesium Engineering and Research Institute Company Limited ( SAMI )

Kunming Prospecting Design institute of China

Nonferrous Metals Industry Co,,Ltd

No.9 Metailurgical Construction Group Co.,Ltd

Shenyang Aluminum & Magnesium Engineering and Research Institute Company Limited ( SAMI )

85 KiewitCorp.

Cherne Contracting Company

Construction Kiewit Cie

Ganotec Inc.

Kiewit Building Group Inc.

Kiewit Canada Group Inc.

2025 Top 225 International Design Firms – Subsidiaries by Rank

RankCompany Subsidiary

Kiewit Engineering Group Inc.

Kiewit Foundations Co.

Kiewit Infrastructure Co.

Kiewit Infrastructure South Co.

Kiewit Infrastructure West Co.

Kiewit Offshore Services Ltd.

Kiewit Power Constructors Co.

Kiewit Water Facilities South Co.

Mass Electric Construction Co.

Peter Kiewit Sons ULC

T.E. Ibberson Company

TIC - The Industrial Company

Weeks Marine Inc.

86 AJiGroup

A J I Engineering Consultancy L.L.C

AJi Abu Dhabi Arabtech Jardaneh International Abu Dhabi

AJi Oman Arabtech Jardaneh International Oman

AJi Saudi Arabtech Jardaneh And Partners For Engineering Consultancy

AJiBE Arabtech Jardaneh Built Environment

AJiWE Arabtech Jardaneh Water and Environment

HDP (Overseas) Ltd.

QHCAJI

87 IPS-IntegratedProjectServicesLLC

BS Denmark Aps trading at Integrated Project Services

ILPS Limited Unipessoal LDA

IPS - Architect Services Canada Inc

IPS - Integrated Project Services (Germany) GmbH

IPS - Integrated Project Services (Ireland) Limited

IPS - Integrated Project Services Corp

IPS - Integrated Project Services GmbH

IPS - Integrated Project Services LLC

IPS - Integrated Project Services Limited

IPS - Integrated Project Services Pvt Ltd

IPS - Integrated Project Services ULC

IPS - Mehtalia Private Limited

IPS - Services de Projects Intégrés S.E.N.C

RankCompany Subsidiary

IPS - Servicos de Projectos Integrados Ltda

IPS BioPharmaceutical Technical Consulting (Tianjin) Limited Liability Company

IPS Bioengineering Technology (Shanghai) Co., Ltd

IPS Professional Engineers and Architects PC

Integrated Project Services International Pvt Ltd

Trenmor GmbH trading as IPS-Integrated Project Services

Trenmor PTY Limited trading as IPS Life Sciences

88 PROGERSpA

CASPIAN PROGER ENGINEERING & CONSULTING

PROGER EGYPT S.A.E.

PROGER ENGINEERING ROMANIA

SUISSEMED

90 JSTIGroup

EPTISA SERVICIOS DE INGENIERÍA,S.L.

JIANGSU TS TRAFFIC DESIGN & RESEARCH DIVISION CO.,LTD.

JIANGSU YIMING TESTING TECHNOLOGY CO.,LTD.

JSTI SMART CITY TECHNOLOGY (NANJING) CO.,LTD.

XIAMEN MUNICIPAL ENGINEERING DESIGN DIVISION CO.,LTD.

91 NV5GlobalInc.

Aero-Metric Holdings, Corp

Alta Environmental, LP

Axim Geospatial, LLC

Bock & Clark Corporation

CHI Engineering Services Inc.

CivilSource, Inc.

Dade Moeller & Associates, Inc.

Energenz Consulting

GIS Solutions, Inc.

GeoDesign, Inc.

Geodynamics, LLC

Geospatial Holdings, Inc.

Hanna Engineering, Inc.

Holdrege and Kull Consulting Engineers

2025 Top 225 International Design Firms – Subsidiaries

RankCompany Subsidiary

J.B.A. Consulting Engineers (Asia)

J.B.A. Consulting Engineers, Inc.

Marron and Associates, Inc.

Mediatech FZ, LLC

NV5 Consultants India Private Limited

NV5 Consultants, Inc.

NV5 Engineers and Consultants, Inc.

NV5 Geospatial Solutions, Inc.

NV5 Geospatial Solutions, UK Limited

NV5 Geospatial, Inc.

NV5 Holdings, Inc.

NV5 Information Technology

NV5 LTD (HK)

NV5 Malaysia, SDN, BHD

NV5 Northeast, Inc.

NV5 Philippines Corp

NV5 Planning and Design, Inc.

NV5 West, Inc.

NV5, Inc.

NV5, LLC

Optimal Energy, LLC

Quantum Spatial Canada

Sage Renewable Energy Consulting

The Sextant Group, Inc.

WHPacific, Inc 92 DewanArchitects+Engineers

Dewan Architects + Engineers

Ecofirst Services Limited

TCE Delaware Corp

Tata Consulting Engineers USA, LLC

RankCompany Subsidiary

Tata Engineering Consultants Saudi Arabia Company

CCJV P1 Engineering & Construction Sdn. Bhd.

CINDA Engineering & Construction Private Limited

CIPEC Construction Inc.

CTCI (Thailand) Co., Ltd.

CTCI Advanced Systems Inc.

CTCI Americas Inc.

CTCI Arabia Ltd.

CTCI Beijing Co., Ltd.

CTCI Chemical Corp.

CTCI Construction Corporation

CTCI Corporation

CTCI Development Corp.

CTCI Engineering & Construction Sdn. Bhd.

CTCI Innovation Co., Ltd.

CTCI Machinery Corp.

CTCI Malaysia Sdn. Bhd.

CTCI Resources Engineering Inc.

CTCI STSP Water Resources Corporation

CTCI Shanghai Co., Ltd.

CTCI Singapore Pte. Ltd.

CTCI Smart Engineering Corp.

CTCI Vietnam Company Limited

CTCI-HDEC (Chungli) Corporation

CTME S.A. DE C.V.

ECOVE Chiayi Energy Corp.

ECOVE Environment Corporation

ECOVE Environment Services Corporation

ECOVE Environment Services Gangshan Corporation

ECOVE Miaoli Energy Corporation

ECOVE Resource Recycling Corporation

ECOVE Solar Power Corporation

ECOVE Solvent Recycling Corporation

ECOVE Waste Management Corporation

ECOVE Wujih Energy Corporation

G. D. International LLC

LUMBERTON SOLAR W2-090, LLC

MASTEQ Engineering Sdn.Bhd.

PT CTCI International Indonesia

2025 Top 225 International Design Firms – Subsidiaries

RankCompany Subsidiary

Sinogal - Waste Services Co., Ltd.

96 LombardiGroup

EG4Risk Srl

HDZ AG

LAMI SA

Lombardi Andina SA

Lombardi Australia Pvt. Ltd.

Lombardi Belgium SA

Lombardi Consultants Ltd

Lombardi Engineering Ltd

Lombardi India Pvt. Ltd.

Lombardi Ingegneris Srl

Lombardi Ingeniería Peru SA

Lombardi Ingénierie SAS

Lombardi Latinoamerica SA

99 Zutari(Pty)Ltd.

ZUT Lead Engineering Consultancy

Zutari (Namibia) (Pty) Ltd

Zutari Africa Limited

Zutari Africa Limited Tanzania

Zutari Africa Limited Zambia

Zutari Angola Limitada

Zutari Botswana (Pty) Ltd

Zutari Consulting Nigeria Limited

Zutari Engineering Consultancy

Zutari Engineering Consultants WLL

Zutari Engineering International (Pty) Ltd

Zutari Eswatini (Pty) Ltd

Zutari Ghana Limited

Zutari Kenya Limited

Zutari Lesotho (Pty) Ltd

Zutari Mozambique Limitada

Zutari Rwanda Limited

Zutari Uganda Limited

101 SSH

Dar SSH International Engineering Consultants LLC

RankCompany Subsidiary

Dar SSH International Engineering Consultants LLC

Dar SSH International Engineering Consultants S.A

Dar SSH International Engineering Consultants Wll

SSHIC International Engineering Consultants LLC

Sadoon Faisal Al-Esa & Partner Consulting Engineers LLC

104 ChinaTriumphInternational EngineeringCo.Ltd.

CHINA TRIUMPH INTERNATIONAL ENGINEERING(SPAIN),SOCIEDAD LIMITADA

China Building Material International Technology Investment Co., Ltd.

PT. Damai Indah Kacatipis

TRIUMPH ENGINEERING(ARGENTINA)S.A.U.

Triumph Engineering (UK) CO,. Ltd

105 DohwaEngineeringCo.Ltd.

DHE CORPORATION

DOHWA COLOMBIA S.A.S

DOHWA GREEN ENERGY CO.,LTD

DOHWA RESOURCE DEVELOPMENT CO., LTD

Dohwa India Private Limited

Dohwa Polska Spk

Inwater Solution AGRO

PT. DOHWA CONSTRUCTION INDONESIA

PT. Hidro Jaya Konstruksi

VM CONSULTORES DE INGENIERIA S.A.

109 AtlasGroup

Atlas Genie Civil

Atlas Group

Atlas Yapi

USCEM

111 JGCHoldingsCorp.

JAPAN NUS CO., LTD.

JGC ASIA PACIFIC PTE. LTD.

2025 Top 225 International Design Firms – Subsidiaries

RankCompany Subsidiary

JGC Catalysts and Chemicals Ltd.

JGC Corporation

JGC India EPC Private Limited

JGC JAPAN CORPORATION

JGC PHILIPPINES, INC.

JGC PLANTECH AOMORI Co., Ltd.

JGC Trading & Services Co., Ltd

Japan Fine Ceramics Co., Ltd. (JFC)

NIKKI BUSINESS SERVICES CO., LTD.

Nikki-Universal Co., Ltd.

PT. JGC INDONESIA

Swing Corporation

114 GrupoACS/Hochtief

Cimic

Dragados

FlatironDragados

Hochtief Europe

Turner 115 ShakerGroup

CONISYS

Shaker Consultancy

Shaker Consultancy Group

Shaker Consultancy Uganda Ltd

Shaker Group Iraq

Shaker Group Kenya Limited

Shaker International Limited

Shaker Power Algeria SARL

Shaker Power Maroc

Inner Mongolia Railway Survey Design Consulting Company Limited

Jilin Railway Survey Design Consulting Company Limited

Shenyang Railway Survey Design Consulting Company Limited

The Third Railway Design and Survey Company Limited

RankCompany Subsidiary

SIA

ST2i

STUDI Cameroun

STUDI Gabon 118

SETS East Africa SETS Jordan

North Africa SETS Saudi Arabia

RSPArchitectsPlanners&Engineers AC Consortium Pte Ltd Squire Mech Pte Ltd

Chemical Grouting Co., Ltd.

Clima-Teq Co., Ltd.

Ilya Corporation

Kajima Asia Pacific Holdings Pte. Ltd.

Kajima Australia Pty Ltd

Kajima Europe Ltd.

Kajima Mechatro Engineering Co., Ltd.

Kajima Road Co., Ltd.

Kajima U.S.A. Inc.

2025 Top 225 International Design Firms – Subsidiaries

RankCompany Subsidiary

Taiko Trading Co., Ltd.

123 Deerns

Deerns Brazil

Deerns France

Deerns Germany

Deerns India

Deerns Italy

Deerns Middle East

Deerns Netherlands

Deerns Spain

Deerns UK

124 DBAGroupSpA

ACTUAL BH D.O.O.

ACTUAL I.T. D.D.

ACTUAL I.T.D.O.O. NOVISAD ACTUAL I.T.D.O.O., ŽMINJ

C&G S.R.L.

DBA S.P.A

DBA GROUP S.P.A.

DBA IT DOO

DBA POJEKTI (MN)

DBA PRO ALBANIA SHPH

GH2 S.R.L.

ITELIS D.O.O.

KEYPERS S.R.L.

PRO.ASTEC D.O.O

SJS ENGINEERING S.r.l.

UNISTAR LC D.O.O.

126 ChinaRailwayGroupLtd.

China Overseas Engineering Group Co., Ltd.

China Railway Construction Engineering Group Co.,Ltd

China Railway Electrification Engineering Group Co.,Ltd

China Railway First Group Co.,Ltd

China Railway International Group

China Railway Major Bridge Engineering Group CO.,Ltd

RankCompany Subsidiary

China Railway No.10 Engineering Group Co.,Ltd

China Railway No.2 Engineering Group Co.,Ltd

China Railway No.3 Engineering Group Co.,Ltd

China Railway No.4 Engineering Group Co.,Ltd

China Railway No.5 Engineering Group Co.,Ltd

China Railway No.8 Engineering Group Co.,Ltd

China Railway No.9 Group Co.,Ltd

China Railway Seventh Group Co.,Ltd

China Railway Sixth Group Co.,Ltd

China Railway Tunnel Group Co.,Ltd

127 AMGAlAmarConsultingGroupSA Amar Golden Design L.L.C.

128 BeijingUrbanConstructionGroup Co.Ltd.

BEIJING URBAN CONSTRUCTION DESIGH&DEVELOPMENT GROUP CO., LTD.

BEIJING URBAN CONSTRUCTION DESIGH&DEVELOPMENT GROUP CO.,LTD.

BEIJING URBAN CONSTRUCTION DESIGN AND DEVELOPMENT CO., LTD.

BEIJING URBAN CONSTRUCTION INSTALLATION CO., LTD.

BEIJING URBAN CONSTRUCTION NO.1 CO.,LTD

BEIJING URBAN CONSTRUCTION NO.10 CO.,LTD

BEIJING URBAN CONSTRUCTION NO.16 CO.,LTD

BEIJING URBAN CONSTRUCTION NO.2 CO.,LTD

BEIJING URBAN CONSTRUCTION NO.5 CO.,LTD

BEIJING URBAN CONSTRUCTION NO.6 CO.,LTD

BEIJING URBAN CONSTRUCTION NO.7 CO.,LTD

BEIJING URBAN CONSTRUCTION NO.8 CO.,LTD

BEIJING URBAN CONSTRUCTION NO.9 CO.,LTD

BEIJING URBAN CONSTRUCTION NORTH CONSTRUCTION CO.LTD.

BEIJING URBAN CONSTRUCTION WUWEI CO.,LTD.

BEIJING URBAN CONSTRUCTION YUANDONG GROUP OF CONSTRUCTION INVESTMENT CO., LTD.

2025 Top 225 International Design Firms – Subsidiaries

RankCompany Subsidiary

CIVIL ENGINEERING GENERAL CONTRACTING DEPT., BEIJING URBAN CONSTRUCTION GROUP.

CONSTRUCTION ENGINEERIBG GENERAL CONTRACTING DEPT. BEIJING URBAN CONSTRUCTION GROUP.

132 YukselProjeAS

Yuksel Proje Algeria

Yuksel Proje Azerbaijan

Yuksel Proje Bosnia Herzegovina

Yuksel Proje Coratia

Yuksel Proje Europe

Yuksel Proje Georgia

Yuksel Proje India

Yuksel Proje Romania

Yuksel Proje Saudi Arabia

Yuksel Proje Uzbekistan

133 IRDEngineering

IRD Engineering Bosnia and Herzegovina

IRD Engineering Moldova

IRD Engineering Serbia

135 CISPDRCorporation

CISPDR Corporation, Branch of Ecuador

CISPDR Corporation, Branch of Peru

ChangJiang Geophysical Exploration and Testing Co., Ltd

ChangJiang Geotechnical Engineering Corporation

ChangJiang Spatial Information Technology Engineering Co., Ltd

ChangJiang Survey Planning Design and Research Co., Ltd

Changjiang International Engineering Co., Ltd.

Changjiang Schinta Software Technology Co., Ltd.

Three Gorges Geotechnical Consultants Co., Ltd

RankCompany Subsidiary

136 ChinaStateConstructionEngineering Corp.Ltd.

CSCEC AECOM Consultants Co., Ltd

CSCEC Algeria Limited

CSCEC International Operations

CSCEC Xinjiang Construction & Engineering (Group) Co., Ltd

China Construction America

China Construction Communications Engrg. Group Corp. Ltd

China Construction Eighth Engineering Division Corp., Ltd

China Construction Engineering Design Group Corporation Limited

China Construction Fangcheng Investment and Development Group Corp. Ltd

China Construction Fifth Engineering Division Corp., Ltd

China Construction First Group Corporation Limited

China Construction Fourth Engineering Division Corp., Ltd

China Construction Industrial & Energy Engineering Group Co., Ltd

China Construction Infrastructure Co., Ltd

China Construction Science and Technology Co., Ltd

China Construction Second Engineering Bureau Limited

China Construction Seventh Engineering Division Corp., Ltd

China Construction Sixth Engineering Division Corp., Ltd

China Construction Steel Structure Corp. Ltd

China Construction Third Engineering Bureau Co., Ltd

China Construction （South Pacific）Development Co Pte Ltd

China Northeast Architectural Design and Research Institute Corp., Ltd

China Northwest Architectural Design and Research Institute Corp., Ltd

China Overseas Holdings Limited

2025 Top 225 International Design Firms – Subsidiaries by

RankCompany Subsidiary

China Shanghai Architectural Design & Research Institute Co., Ltd

China Southwest Architectural Design and Research Institute Corp., Ltd

China Southwest Geotechnical Investigation and Design Institute Corp., Ltd

China State Construction Development Corp. Ltd

China State Construction Engrg. Corp. (Middle East) (LLC)

China State Construction Harbour Construction Co., Ltd

China State Decoration Group Corp. Ltd

China West Construction Group Co., Ltd

K2 Consultancy Group

Otak CPM

Tarr Whitman Group

Walker Sime

PADECO

PADECO Poland Sp. z o. o

Jan

COOEC (Thailand) Co., Ltd.

COOEC Brasil Offshore Ltda.

RankCompany Subsidiary

COOEC Canada Company Ltd.

COOEC International Co., Limited

COOEC International Engineering Co.,ltd

COOEC Nigeria Limited

COOEC Subsea Technology Co., Ltd.

COOEC-Fluor Heavy Industries Co., Ltd.

Offshore Oil Engineering Arabia Limited

Offshore Oil Engineering (Qing Dao) Co.,Ltd.

Offshore Oil Engineering (zhuhai) Co., Ltd. 145 Moffatt&Nichol

Craney Island Design Partners, LLC

Latitude Environmental Inc.

Moffatt & Nichol B.V.

Moffatt & Nichol Baltics, UAB

Moffatt & Nichol Chile, S.P.A.

Moffatt & Nichol Engenharia E Consultoria Ltda

Moffatt & Nichol GmbH

Moffatt & Nichol Iberia Ingenieria S.L.

Moffatt & Nichol Information Systems LLC

Moffatt & Nichol International, Inc.

Moffatt & Nichol Massachusetts, LLC

Moffatt & Nichol Pte. Ltd.

Moffatt & Nichol Pty Ltd

Moffatt & Nichol, Latin America Inc.

Moffatt & Nichol, Ltd

NextPort, S.L. (formerly Moffatt & Nichol Spain S.L.)

Waggonner & Ball (Formerly Waggonner & Ball, LLC)

HR Smart Parking

Heerim Manila

Heerim NY

Heerim New Delhi

Heerim Riyadh

MIO

Metagellary LaLuna

Smart-H

2025 Top 225 International Design Firms – Subsidiaries

Energoprojekt Hidroinženjering

Energoprojekt Industrija

Energoprojekt Izgradnja

Energoprojekt Niskogradnja

Energoprojekt Urbanizam i arhitektura

Energoprojekt Visokogradnja

159 DistanceStudioConsultants

Distance Studio Arts for Engineering Consultancy

Distance Studio International Civil Engineering Consultancy L.L.C

Distance studio Consultants

151 DarAlOmranRasemBadran

Dar Al Omran Engineering Consultancy

Dar Al Omran Planning, Architecture, Engineering

EuroConsultforEngineering Consultancy

Euro Consult Iraq

Euro Consult for Engineering Consultancy

Euro Conult Muhandislik Musaverlik

162 Langan

Langan CA, Inc

Langan CT, Inc

Langan Engineering and Environmental Services, LLC

Langan Engineering, Environmental, Surveying, Landscape Architecture and Geology, DPC

Langan International UK, LTD

Langan International, LLC

Langan MA, Inc

Langan MI, Inc

Langan NC, Inc

Langan Panama, S. DE R.L.

163 EnneadArchitectsLLP

Ennead Design Consulting (Shanghai)

164 ChinaDesignGroupCo.Ltd.

Jiangsu Wei Xin Engineering Consultants Ltd.

Ningxia Survey and Design Research Institute Co., Ltd

Yangzhou Survey and Design Research Institute Co., Ltd

2025 Top 225 International Design Firms – Subsidiaries

RankCompany Subsidiary

165 ArchetypeGroup

Archetype Brazil

Archetype Cambodia

Archetype China

Archetype France

Archetype India

Archetype Indonesia

Archetype Ivory Coast

Archetype Laos

Archetype Malaysia

Archetype Mexico

Archetype Mongolia

Archetype Myanmar

Archetype Philippines

Archetype Saudi Arabia – archesco

Archetype Singapore

Archetype Thailand

Archetype Tunisia

Archetype USA

Archetype Vietnam

166 MIMARGroup

M E A MIMAR ENGINEERING CONSULTANTS

MIMAR ABU DHABI ENGINEERING CONSULTANTS

L L C

MIMAR CONSULT

MIMAR EMIRATES ENG. CONSULTANTS

MIMAR EMIRATES ENGINEERING CONS /L.L.C

MIMAR ENGINEERING CONSULTANCY

MMR For Project Management

Mimar Emirates and ARAC Engineering Consultancy Co

Mimar Engineering Consultants Egypt

167 HartHowerton

Hart Howerton Partners, Ltd

Hart Howerton Planning & Architecture Canada, Ltd

Hart Howerton, Ltd

Telegraph Hill Acquisition

Union Street Artworks

RankCompany Subsidiary

168 DeSimoneConsultingEngineering

Decipher

Dowco

169 ShenyangYuandaAluminumIndus. Eng'gCo.Ltd.

CNYD Aluminium Industry Engineering Malaysia

SDN BHD

CNYD CURTAIN WALL (CAMBODIA) CO .,LTD

PT Shenyang Yuanda Aluminium Industry Engineering

Yuanda (UK) Co. Ltd.

Yuanda Australia Pty Ltd.

Yuanda Qatar Aluminium Industry Engineering

W.L.L.

Yuanda USA Corporation

170 M3EngineeringandTechnology Corp.

M3 Argentina S.R.L.

M3 Colombia S.A.S.

M3 Engineering & Construction Inc.

M3 Engineering Canada, Ltd.

M3 Ingenieria Chile S.A.

M3 Ingenieria Peru S.A.C.

M3 Mexicana S. de R.L. de C.V.

171 CRB

CRB Architects - Engineers P.C.

CRB Builders, LLC

CRB Germany, GmbH

CRB Group, GmbH

Clark, Richardson and Biskup Consulting

Engineers, Inc.

173 ENTRUSTSolutionsGroup

EN Engineering, LLC

ENTRUST Solutions Group Canada, Inc

ESC Engineering, LLC

2025 Top 225 International Design Firms – Subsidiaries

RankCompany Subsidiary

FiberRise Communications, LLC

G2 Integrated Solutions, LLC

Kestrel Power Engineering Ltd

Kestrel Power Engineering, LLC

Magellan Advisors, LLC

QC Data, LLC

Spectrum Engineering, LLC

TG Advisers, LLC

Texas Utility Engineering, LLC

175 NationalEngineeringServices Pakistan(Pvt.)Ltd.

ECO Consultancy & Engineering Company (pvt.)

Limited (ECO-CEC)

TURKPAK International (Pvt.) Limited

176 PCGProfabrilConsulplanoGlobalSA

ASIACONSULT PACIFIC LTD

COBRAPI

PAL ASIACONSULT LDA

PCG CONSULPLANO VIATUNEL SA

PCG PROFABRIL XXI SA

PROFABRIL BOLIVIA

PT PCG PARTONO FONDAS

178 StanleyConsultants

Resilient Analytics, Inc

180 Al-MustasharLil-HandasahCo. (Engicon)

Engicon O&M

Praxis Architects and Urban Designers

182 BarrEngineeringCo.

Barr Engineering Michigan LLC

Barr Engineering and Environmental Science Canada Ltd.

RankCompany Subsidiary

184 GSEngineering&Construction

Danwood S.A.

Elements (Europe) Limited

GS Construction Arabia Co.,Ltd.

GS Construction Middle East L.L.C.

GS E&C Construction Canada Ltd.

GS E&C Nanjing Co.,Ltd.

GS Engineering & Construction Australia Pty Ltd

GS Engineering & Construction Poland Sp. z o.o.

GS Engineering&Construction Delhi Pvt. Ltd

GS Engineering&Construction Mumbai Pvt. Ltd.

GS Engineering&Construction Spain S.L

GS Inima Environment S.A.

GS Property Mountain View LLC

Mountain View Owner LLC

Vietnam GS Enterprise One Member LLC

Vietnam GS Industry One-Member LLC

Xi S&D

185 DennisGroup

Dennis Brasil Engenharia Ltda

Dennis Grou International, Unipessoal Lda

Dennis Group Canada, Inc.

IFAB Engineering Partners Ltd

The Dennis Engineering Group, LLC

The Dennis Group, Inc.

189 Merrick&Co.

Merrick Canada, LLC

Merrick UK Ltd

191 MiyamotoInternational

Miyamoto Global Experts India, Pvt, Ltd.

Miyamoto Heritage, S.R.L.

Miyamoto International Ciudad de Mexico, S. de R.L. de C.V.

Miyamoto International Management Services, LLC

Miyamoto International Nepal Private Limited

Miyamoto International New Zealand

Management, LLC

2025 Top 225 International Design Firms – Subsidiaries by

RankCompany Subsidiary

Miyamoto International Puerto Rico, LLC

Miyamoto International Silk Road

Miyamoto International, Disaster Management

Miyamoto Italia S.R.L.

PT. Miyamoto International Indonesia

193 PerkinsEastman

BFJ Planning

RGR Landscape Urbanomics

195 PeopleDreams&Technologies GroupCo.Ltd.

CHODAI CO., LTD.

CHODAI-TEC Co., Ltd.

Effect Co., Ltd.

JUNPUZI CO., LTD.

Kiso-Jiban Consultants Co., Ltd.

NICS CO., LTD.

PC Railway Consultant CO., LTD.

197 Day&Zimmermann

D&Z Of Canada Corporate

Day & Zimmermann International, Inc. - DBA M&C

Day & Zimmermann Management Services, Inc.

Day & Zimmermann NPS, Inc.

Mason & Hanger

The Atlantic Group, Inc. - DBA DZ Atlantic

199 KleinfelderInc.

CMWorks, Inc.

Century Engineers, LLC

Doucet & Associates, Inc.

Gas Transmission Systems, Inc.

Kleinfelder Australia Pty

Kleinfelder Canada, Inc.

Kleinfelder Construction Services

Kleinfelder Northeast, Inc.

Kleinfelder Southeast, Inc.

Kleinfelder, Inc.

RankCompany Subsidiary

The Kleinfelder Group, Inc.

201 Geo-LogicAssociatesInc.

Clear Creek Associates, LLC

Daniel B. Stephens & Associates, Inc.

Geo-Logic Peru, SRL

Kunkel Engineering Group, LLC

RMC Geoscience, Inc.

Summit Water Resources, LLC

The MINES Group, Inc.

202 HSSEngineersBerhad

Consultant HSS

HEB Energy Sdn Bhd

HSS Alliance (Sarawak) Sdn Bhd

HSS BIM Global Ventures Sdn Bhd

HSS Engineering (Cambodia)

HSS Engineering (Iraq)

HSS Engineering Sdn Bhd

HSS Integrated (India) Private Limited

HSS Integrated Sdn Bhd

HSS International Sdn Bhd

HSS Mekanikal & Elektrikal Sdn Bhd

HSS Propick Technologies Sdn Bhd

SMHB Engineering Sdn Bhd

SMHB Sdn Bhd

207 TrueEnvironmental

Ensero Solutions

GKY & Associates

Great Ecology

Matrix New World Engineering

Sphere 3 Environmental

Sundance Consultants

Triton Environmental

2025 Top 225 International Design Firms – Subsidiaries

RankCompany Subsidiary

209 TataProjectsLtd.

Artson Engineering Ltd

TPL Services Private Limited

TQ Cert Services Private Limited

212 CoffmanEngineersInc.

Coffman Engineers, Inc

213 luisvidal+architects

LVA Luis Vidal USA INC

LVA RD SRL

Vidal y Asociados Estudio de Arquitectura SLP

Vidal y Asociados Estudio de Arquitectura SLP Agencia en Chile

214 SamanCorp.

Saman India E&C Private Ltd.

220

RankCompany Subsidiary

PGESCO Branch-DRC

PGESCO Branch-Dubai

PGESCO Branch-Iraq

221 Dewberry

Dewberry Architects Inc.

Dewberry Design-Builders Inc.

Dewberry Engineers Inc.

223 BakerEngineering&Risk ConsultantsInc.

FORTRESS Protective Buildings LLC

224 BeijingInstituteofArchitectural Design

Beijing Institute of Architectural Design Co., Limited Chengdu Branch

Beijing Institute of Architectural Design Co., Limited Chongqing Branch

Beijing Institute of Architectural Design Co., Limited Daxing Branch

Beijing Institute of Architectural Design Co., Limited Guangzhou Branch

Beijing Institute of Architectural Design Co., Limited Hefei Branch

Beijing Institute of Architectural Design Co., Limited Shanghai Branch

Beijing Institute of Architectural Design Co., Limited Shanxi Branch

Beijing Institute of Architectural Design Co., Limited South China Branch

Beijing Institute of Architectural Design Co., Limited Wuhan Branch

Beijing Institute of Architectural Design Co., Limited Xiong’an Hebei Branch

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

A.NORTHAMERICA

Canada

AFRY

Actalent Services

Arcadis NV

Artelia

Arup

AtkinsRéalis

Baker Engineering & Risk Consultants Inc.

Barr Engineering Co.

Bechtel

Bilfinger Engineering

Black & Veatch

Burns & McDonnell

CDM Smith

CHA Consulting Inc.

COWI

CRB

China Aluminum International Eng'g Corp. Ltd.

China Energy Engineering Corp. Ltd.

China Petroleum Engineering Co. Ltd.

Coffman Engineers Inc.

DLR Group

DeSimone Consulting Engineering

Dennis Group

Dewberry

ENTRUST Solutions Group

EXP

Egis Group

Ennead Architects LLP

Fluor

GEI Consultants Inc.

GHD

Gannett Fleming TranSystems (GFT)

Region Country Company

Gensler

Geo-Logic Associates Inc.

Geosyntec Consultants

Ghafari Associates LLC

Gresham Smith

HDR

HKS

HOK

Hart Howerton

Haskoning

Hatch Ltd.

ID&E Holdings

ILF Consulting Engineers

INGEROP

IPS-Integrated Project Services LLC

Italferr SpA

JGC Holdings Corp.

Jacobs Solutions Inc.

Jensen Hughes

Kiewit Corp.

Kleinfelder Inc.

Kohn Pedersen Fox (KPF)

Langan

Leidos

Lombardi Group

M3 Engineering and Technology Corp.

ME Engineers

MG2

Merrick & Co.

Metallurgical Corp. of China Ltd.

Moffatt & Nichol

Mott MacDonald

NBBJ

NORR

NV5 Global Inc.

Offshore Oil Engineering Co. Ltd.

PM Group

Parsons Corp.

Perkins Eastman

Populous

Region Country Company

RINA Consulting SpA

Ramboll Group

SETEC

SIDARA SLR

SSOE Group

STUDIOS architecture

SYSTRA

Salas O'Brien

Samsung E&A Co. Ltd.

Sargent & Lundy

Sener Grupo de Ingeniería SA

Simpson Gumpertz & Heger

Skidmore Owings & Merrill

Stantec Inc.

Surbana Jurong Private Ltd.

TATA Consulting Engineers Ltd.

TPF SA

TRC Cos. Inc.

Tata Projects Ltd.

Technip Energies

Tecnica y Proyectos SA (TYPSA)

Tetra Tech

Thornton Tomasetti

Tower Engineering Professionals

Tractebel Engineering

True Environmental

WATG

WSP Global Inc.

Waldemar S. Nelson and Co. Inc.

Ware Malcomb

Woolpert

Worley Ltd.

United States

ACPV Architects Srl

AFRY

ARX Group (formerly Pini Group)

Arcadis NV

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

Archetype Group

Artelia

Arup

AtkinsRéalis

Atlas Group

Beca Group Ltd.

Beijing Institute of Architectural Design

Bilfinger Engineering

COWI

CTCI Corp.

China National Chemical Eng'g Group Corp. Ltd.

Dohwa Engineering Co. Ltd.

Dorsch Global GmbH

Egis Group

Empresarios Agrupados Internacional SA

GHD

Haskoning

Hatch Ltd.

Heerim Architects & Planners Co. Ltd.

ID&E Holdings

ILF Consulting Engineers

Italconsult SpA

JGC Holdings Corp.

KEPCO Engineering & Construction Co. Inc.

Kajima Corp.

Korea Engineering Consultants Corp.

Kunhwa Engineering & Consulting Co. Ltd.

Larsen & Toubro Ltd.

Lombardi Group

Maire SpA

Meinhardt Group International

Mott MacDonald

PM Group

Politecnica Ingegneria

RINA Consulting SpA

Ramboll Group

Region Country Company

SETEC

SIDARA

SLR

SYSTRA

Samoo Architects & Engineers

Samsung E&A Co. Ltd.

Sener Grupo de Ingeniería SA

Shenyang Yuanda Aluminum

Indus. Eng'g Co. Ltd.

Stantec Inc.

Surbana Jurong Private Ltd.

Sweco AB

TATA Consulting Engineers Ltd.

TPF SA

Tata Projects Ltd.

Technip Energies

Technital SpA

Tecnica y Proyectos SA (TYPSA)

Tekfen Muhendislik AS

Tractebel Engineering

WSP Global Inc.

Worley Ltd.

Zutari (Pty) Ltd.

luis vidal + architects

B.LATINAMERICA

Argentina

AFRY

ARX Group (formerly Pini Group)

Arcadis NV

Artelia

Arup

AtkinsRéalis

Baker Engineering & Risk Consultants Inc.

Bechtel

Black & Veatch

Region Country Company

China Aluminum International Eng'g Corp. Ltd.

China Energy Engineering Corp. Ltd.

China National Chemical Eng'g Group Corp. Ltd.

China Nerin Engineering Co. Ltd.

China Triumph International Engineering Co. Ltd.

Egis Group

Fichtner Group

Fluor

GHD

Gensler

Haskoning

Hatch Ltd.

Ingenieria Y Economia Del Transporte SA (INECO)

JGC Holdings Corp.

JSTI Group

Jensen Hughes Langan

Lombardi Group

M3 Engineering and Technology Corp.

Moffatt & Nichol

Mott MacDonald

PADECO Co. Ltd.

Power Construction Corp. of China

RINA Consulting SpA

Ramboll Group

SIDARA

Saman Corp.

Sargent & Lundy

Sener Grupo de Ingeniería SA

Simpson Gumpertz & Heger

Stantec Inc.

TPF SA

TRC Cos. Inc.

Tata Projects Ltd.

Thornton Tomasetti

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

WSP Global Inc.

Worley Ltd.

Bolivia

AFRY

ARX Group (formerly Pini Group)

CES Consulting Engineers

Salzgitter GmbH

Cheil Engineering Co. Ltd. (CHEIL)

China Aluminum International Eng'g Corp. Ltd.

China National Chemical Eng'g Group Corp. Ltd.

China Railway Construction Corp. Ltd.

Dohwa Engineering Co. Ltd.

Empresarios Agrupados Internacional SA

Ennead Architects LLP

Gensler

Haskoning

ID&E Holdings

INGEROP

JSTI Group

Korea Engineering Consultants Corp.

Kunhwa Engineering & Consulting Co. Ltd.

Langan

Metallurgical Corp. of China Ltd.

Oriental Consultants Global (OCHD)

PCG Profabril Consulplano

Global SA

Power Construction Corp. of China

RINA Consulting SpA

Ramboll Group

SETEC

Saman Corp.

Region Country Company

Simpson Gumpertz & Heger

Stantec Inc.

Sweco AB

TPF SA

Tractebel Engineering

Brazil

AFRY

ARX Group (formerly Pini Group)

AYESA

Arcadis NV

Archetype Group

Artelia

Arup

AtkinsRéalis

Baker Engineering & Risk Consultants Inc.

Barr Engineering Co.

Black & Veatch

CHA Consulting Inc.

COWI

CTI Engineering Group

China Aluminum International Eng'g Corp. Ltd.

China Communications

Construction Group Ltd.

China Energy Engineering Corp. Ltd.

China Nerin Engineering Co. Ltd.

China Railway Construction Corp. Ltd.

Day & Zimmermann

Deerns

Dennis Group

Egis Group

Empresarios Agrupados Internacional SA

Fichtner Group

Gensler

Geosyntec Consultants

HOK

Region Country Company

Haskoning

Hatch Ltd.

ID&E Holdings

IPS-Integrated Project Services LLC

Ingenieria Y Economia Del Transporte SA (INECO)

Jensen Hughes

Kohn Pedersen Fox (KPF)

Langan

ME Engineers

Maire SpA

Meinhardt Group

International

Metallurgical Corp. of China Ltd.

Moffatt & Nichol

Mott MacDonald

Offshore Oil Engineering Co. Ltd.

Oriental Consultants Global (OCHD)

PCG Profabril Consulplano Global SA

Page

Populous

Power Construction Corp. of China

Quadrante

RINA Consulting SpA

Ramboll Group

SETEC

SIDARA SLR

SYSTRA

Salas O'Brien

Sargent & Lundy

Sener Grupo de Ingeniería SA

Simpson Gumpertz & Heger

Stantec Inc.

Sweco AB

TRC Cos. Inc.

Technip Energies

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

Tecnica y Proyectos SA (TYPSA)

Tetra Tech

Thornton Tomasetti

Tractebel Engineering

WSP Global Inc.

Ware Malcomb

Worley Ltd.

Yachiyo Engineering Co. Ltd.

Yooshin Engineering Corp.

Chile

AFRY

ARX Group (formerly Pini Group)

AYESA

Arcadis NV

Artelia

Arup

AtkinsRéalis

Baker Engineering & Risk Consultants Inc.

Barr Engineering Co.

Bechtel

Black & Veatch

CDM Smith

CISPDR Corporation

China Energy Engineering Corp. Ltd.

China Nerin Engineering Co. Ltd.

China Railway Construction Corp. Ltd.

Day & Zimmermann

DeSimone Consulting Engineering

Egis Group

Empresarios Agrupados Internacional SA

Fichtner Group

Fluor

GHD

Gannett Fleming TranSystems (GFT)

Region Country Company

Gensler

Haskoning

Hatch Ltd.

ID&E Holdings

ILF Consulting Engineers

INGEROP

JGC Holdings Corp.

JSTI Group

Jensen Hughes

Leidos

Lombardi Group

M3 Engineering and Technology Corp.

Maire SpA

Metallurgical Corp. of China Ltd.

Moffatt & Nichol

Power Construction Corp. of China

Quadrante

RINA Consulting SpA

Ramboll Group

SIDARA

SYSTRA

Sargent & Lundy

Sener Grupo de Ingeniería SA

Stantec Inc.

Surbana Jurong Private Ltd.

Sweco AB

TPF SA

TRC Cos. Inc.

Tecnica y Proyectos SA (TYPSA)

Tractebel Engineering

WSP Global Inc.

Ware Malcomb

Worley Ltd.

Yooshin Engineering Corp.

luis vidal + architects

Colombia

10 Design

AFRY

AYESA

Region Country Company

Arcadis NV

Beijing Institute of Architectural Design

Beijing Urban Construction Group Co. Ltd.

Black & Veatch

CDM Smith

China Communications Construction Group Ltd.

China Railway Construction Corp. Ltd.

China State Construction Engineering Corp. Ltd.

DeSimone Consulting Engineering

Deerns

Dohwa Engineering Co. Ltd.

EXP

Egis Group

Fichtner Group

Gannett Fleming TranSystems (GFT)

Gensler

Geosyntec Consultants

HOK

Haskoning

Hatch Ltd.

ILF Consulting Engineers

INGEROP

Ingenieria Y Economia Del Transporte SA (INECO)

Italferr SpA

JSTI Group

Jensen Hughes

Korea Engineering Consultants Corp.

Langan

Lombardi Group

Miyamoto International

Moffatt & Nichol

Mott MacDonald

Power Construction Corp. of China

RINA Consulting SpA

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

Ramboll Group

SETEC

SIDARA

SLR

SYSTRA

Saman Corp.

Sargent & Lundy

Sener Grupo de Ingeniería SA

Simpson Gumpertz & Heger

Stantec Inc.

Sweco AB

TPF SA

TRC Cos. Inc.

Thornton Tomasetti

WSP Global Inc.

Worley Ltd.

Costa Rica

10 Design

Arcadis NV

Arup

Beijing Institute of Architectural Design

CRB

China Communications Construction Group Ltd.

Coffman Engineers Inc.

Gensler

Hart Howerton

Haskoning

ID&E Holdings

Ingenieria Y Economia Del Transporte SA (INECO)

JSTI Group

Jensen Hughes

Langan

Miyamoto International

Moffatt & Nichol

Perkins Eastman

RINA Consulting SpA

Saman Corp.

Simpson Gumpertz & Heger

TPF SA

TRC Cos. Inc.

Region Country Company

Tecnica y Proyectos SA (TYPSA)

Thornton Tomasetti

Ware Malcomb

Yooshin Engineering Corp.

Ecuador

AFRY

ARX Group (formerly Pini Group)

AYESA

Artelia

Black & Veatch

CES Consulting Engineers

Salzgitter GmbH

CISPDR Corporation

Cheil Engineering Co. Ltd. (CHEIL)

China Communications Construction Group Ltd.

China Railway Construction Corp. Ltd.

Coffman Engineers Inc.

Dohwa Engineering Co. Ltd.

EXP

Egis Group

Fichtner Group

Gensler

Ghafari Associates LLC

Haskoning

ID&E Holdings

ILF Consulting Engineers

JSTI Group

Jan De Nul Group (Sofidra SA)

Kunhwa Engineering & Consulting Co. Ltd.

Lombardi Group

M3 Engineering and Technology Corp.

Metallurgical Corp. of China Ltd.

Miyamoto International

Moffatt & Nichol

Perkins Eastman

Region Country Company

Power Construction Corp. of China

RINA Consulting SpA

Ramboll Group

SIDARA

Sener Grupo de Ingeniería SA

Simpson Gumpertz & Heger

TRC Cos. Inc.

Tecnica y Proyectos SA (TYPSA)

Thornton Tomasetti

Tractebel Engineering

Yooshin Engineering Corp.

El Salvador

Cheil Engineering Co. Ltd. (CHEIL)

China Communications Construction Group Ltd.

China State Construction Engineering Corp. Ltd.

Coffman Engineers Inc.

Dohwa Engineering Co. Ltd.

Fichtner Group

Gensler

Haskoning

Hatch Ltd.

ID&E Holdings

Langan

Mott MacDonald

Oriental Consultants Global (OCHD)

Power Construction Corp. of China

RINA Consulting SpA

Saman Corp.

Sargent & Lundy

Tecnica y Proyectos SA (TYPSA)

Thornton Tomasetti

Versar Global Solutions

Guatemala

Black & Veatch

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

China Communications

Construction Group Ltd.

Empresarios Agrupados Internacional SA

Fichtner Group

Gensler

HKS

Hatch Ltd.

ID&E Holdings

JSTI Group

Kunhwa Engineering & Consulting Co. Ltd.

Langan

Lombardi Group

Oriental Consultants Global (OCHD)

Perkins Eastman

Populous

RINA Consulting SpA

Ramboll Group

Stantec Inc.

TRC Cos. Inc.

Ware Malcomb

Guyana

Artelia

Bechtel

Black & Veatch

China Railway Group Ltd.

China State Construction Engineering Corp. Ltd.

Day & Zimmermann

Gensler

HOK

Haskoning

Jan De Nul Group (Sofidra SA)

Langan

Mott MacDonald

Offshore Oil Engineering Co. Ltd.

Pace

Page

Politecnica Ingegneria

Quadrante

Region Country Company

RINA Consulting SpA

Ramboll Group

Sargent & Lundy

Simpson Gumpertz & Heger

Stantec Inc.

Thornton Tomasetti

Honduras

AFRY

Arcadis NV

Baker Engineering & Risk Consultants Inc.

CHA Consulting Inc.

CTI Engineering Group

Day & Zimmermann

Dohwa Engineering Co. Ltd.

Empresarios Agrupados Internacional SA

Fichtner Group

Gensler

HKS

Hatch Ltd.

ID&E Holdings

Langan

Lombardi Group

Oriental Consultants Global (OCHD)

RINA Consulting SpA

Ramboll Group

Simpson Gumpertz & Heger

TPF SA

Tecnica y Proyectos SA (TYPSA)

Thornton Tomasetti

Tractebel Engineering

Yooshin Engineering Corp.

Mexico

10 Design

AFRY

AYESA

Arcadis NV

Archetype Group

Artelia

Region Country Company

Arup

Baker Engineering & Risk Consultants Inc.

Barr Engineering Co.

Bechtel

Black & Veatch

CHA Consulting Inc.

COWI

CRB

CTCI Corp.

China Energy Engineering Corp. Ltd.

China National Chemical

Eng'g Group Corp. Ltd.

China Railway Construction Corp. Ltd.

China Railway Group Ltd.

Coffman Engineers Inc.

DLR Group

Day & Zimmermann

Dennis Group

ENTRUST Solutions Group

EXP

Egis Group

Empresarios Agrupados Internacional SA

Ennead Architects LLP

Fichtner Group

Fluor

GHD

Gensler

Geosyntec Consultants

Ghafari Associates LLC

HDR

HKS

HOK

Hart Howerton

Haskoning

Hatch Ltd.

ID&E Holdings

ILF Consulting Engineers

INGEROP

Ingenieria Y Economia Del Transporte SA (INECO)

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

JSTI Group

Jensen Hughes

Kajima Corp.

Kiewit Corp.

LEO A DALY

Langan

Leidos

Lombardi Group

M3 Engineering and Technology Corp.

ME Engineers

MG2

Maire SpA

Merrick & Co.

Miyamoto International

Moffatt & Nichol

Mott MacDonald

Page

Parsons Corp.

Perkins Eastman

Populous

Power Construction Corp. of China

RINA Consulting SpA

Ramboll Group

Rebel Design+Group

SIDARA

SSOE Group

STUDIOS architecture

SYSTRA

Samsung E&A Co. Ltd.

Sargent & Lundy

Sener Grupo de Ingeniería SA

Simpson Gumpertz & Heger

Skidmore Owings & Merrill

Stantec Inc.

Sweco AB

TATA Consulting Engineers Ltd.

TPF SA

TRC Cos. Inc.

Technip Energies

Tecnica y Proyectos SA (TYPSA)

Region Country Company

Thornton Tomasetti

Tractebel Engineering

Versar Global Solutions

Vestal Corp.

WATG

WSP Global Inc.

Waldemar S. Nelson and Co. Inc.

Ware Malcomb

Worley Ltd.

Nicaragua

Arcadis NV

Artelia

CTI Engineering Group

China National Machinery Industry Corp.

Day & Zimmermann

Dohwa Engineering Co. Ltd.

Fichtner Group

Gensler

ID&E Holdings

Kunhwa Engineering & Consulting Co. Ltd.

Oriental Consultants Global (OCHD)

Saman Corp.

TPF SA

Thornton Tomasetti

Tractebel Engineering

Panama

AFRY

AYESA

Arcadis NV

Coffman Engineers Inc.

Dohwa Engineering Co. Ltd.

Fluor

Gannett Fleming TranSystems (GFT)

Gensler

Geosyntec Consultants

HKS

Haskoning

Region Country Company

ID&E Holdings

Ingenieria Y Economia Del Transporte SA (INECO)

JSTI Group

Jacobs Solutions Inc.

Langan

Moffatt & Nichol

Mott MacDonald

Oriental Consultants Global (OCHD)

Page

Perkins Eastman

Politecnica Ingegneria

SIDARA

SYSTRA

Saman Corp.

Sargent & Lundy

Sener Grupo de Ingeniería SA

Stantec Inc.

Sweco AB

TRC Cos. Inc.

Tecnica y Proyectos SA (TYPSA)

WSP Global Inc.

Ware Malcomb

Weston Solutions Inc.

Paraguay

AFRY

Arcadis NV

CHA Consulting Inc.

CTI Engineering Group

Dohwa Engineering Co. Ltd.

Empresarios Agrupados Internacional SA

Gensler

ID&E Holdings

PADECO Co. Ltd.

Perkins Eastman

RINA Consulting SpA

Saman Corp.

Tecnica y Proyectos SA (TYPSA)

Tractebel Engineering

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

Yooshin Engineering Corp.

Peru

AFRY

ARX Group (formerly Pini Group)

AYESA

Arcadis NV

Artelia

AtkinsRéalis

Baker Engineering & Risk Consultants Inc.

Bechtel

Black & Veatch

CES Consulting Engineers Salzgitter GmbH

CHA Consulting Inc.

CISPDR Corporation

COWI

Cheil Engineering Co. Ltd. (CHEIL)

China Aluminum International Eng'g Corp. Ltd.

China National Machinery Industry Corp.

China Railway Group Ltd.

Dohwa Engineering Co. Ltd.

Egis Group

Empresarios Agrupados Internacional SA

Energoprojekt Holding PLC

Fichtner Group

Fluor

Gensler

Geo-Logic Associates Inc.

Geosyntec Consultants

Haskoning

Hatch Ltd.

ID&E Holdings

ILF Consulting Engineers

Ingenieria Y Economia Del Transporte SA (INECO)

Italferr SpA

Region Country Company

JSTI Group

Kunhwa Engineering & Consulting Co. Ltd.

Leidos

Lombardi Group

M3 Engineering and Technology Corp.

Metallurgical Corp. of China Ltd.

Miyamoto International

Moffatt & Nichol

Mott MacDonald

Oriental Consultants Global (OCHD)

Power Construction Corp. of China

RINA Consulting SpA

Ramboll Group

SETEC

SIDARA

SYSTRA

Salas O'Brien

Sargent & Lundy

Sener Grupo de Ingeniería SA

Simpson Gumpertz & Heger

Stantec Inc.

TPF SA

TRC Cos. Inc.

Tecnica y Proyectos SA (TYPSA)

Thornton Tomasetti

Tractebel Engineering

WATG

WSP Global Inc.

Worley Ltd.

Suriname

Artelia

China Aluminum

International Eng'g Corp. Ltd.

Fichtner Group

Haskoning

Hatch Ltd.

Region Country Company

Ramboll Group

Simpson Gumpertz & Heger

Stantec Inc.

Uruguay

AFRY

Empresarios Agrupados Internacional SA

Fichtner Group

Gensler

Haskoning

Hatch Ltd.

Ingenieria Y Economia Del Transporte SA (INECO)

Jan De Nul Group (Sofidra SA)

Jensen Hughes

Mott MacDonald

Quadrante

RINA Consulting SpA

Ramboll Group

SETEC

Stantec Inc.

Sweco AB

TRC Cos. Inc.

Tecnica y Proyectos SA (TYPSA)

Thornton Tomasetti

Venezuela

Gensler

Haskoning

Metallurgical Corp. of China Ltd.

SIDARA

Tractebel Engineering

C. CARIBBEANISLANDS

Cuba

China Petroleum Engineering Co. Ltd.

Coffman Engineers Inc.

ID&E Holdings

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

Jensen Hughes

LEO A DALY

Moffatt & Nichol

Oriental Consultants Global (OCHD)

PADECO Co. Ltd.

Power Construction Corp. of China

Stanley Consultants

Versar Global Solutions

Yachiyo Engineering Co. Ltd.

Greater Antilles

AFRY

Arcadis NV

Artelia

Arup

Black & Veatch

China Communications Construction Group Ltd.

DLR Group

EXP

Egis Group

Empresarios Agrupados Internacional SA

Ennead Architects LLP

Gannett Fleming TranSystems (GFT)

Gensler

Hart Howerton

Haskoning

Hatch Ltd.

ID&E Holdings

INGEROP

Ingenieria Y Economia Del Transporte SA (INECO)

JSTI Group

Jensen Hughes

LEO A DALY

Langan

Maire SpA

Miyamoto International

Moffatt & Nichol

Mott MacDonald

Region Country Company

Politecnica Ingegneria

SETEC

SIDARA

STUDIOS architecture

Sargent & Lundy

Sener Grupo de Ingeniería SA

TPF SA

TRC Cos. Inc.

Thornton Tomasetti

Tractebel Engineering

WATG

Waldemar S. Nelson and Co. Inc.

Woolpert

Yooshin Engineering Corp.

luis vidal + architects

Lesser Antilles

AFRY

Arcadis NV

Artelia

Atlas Group

Beijing Institute of Architectural Design

Black & Veatch

CES Consulting Engineers Salzgitter GmbH

CHA Consulting Inc.

China Communications Construction Group Ltd.

Deerns

Denzay Arch. and Engineering

EXP

GHD

Gannett Fleming TranSystems (GFT)

Gensler

Geosyntec Consultants

HOK

Hart Howerton

Haskoning

Hatch Ltd.

Jensen Hughes

Region Country Company

LEO A DALY

Moffatt & Nichol

Mott MacDonald

Page

Parsons Corp.

Politecnica Ingegneria

Rebel Design+Group

SIDARA

Salas O'Brien

Sargent & Lundy

Sweco AB

TRC Cos. Inc.

Thornton Tomasetti

Tractebel Engineering

WATG

WSP Global Inc.

Waldemar S. Nelson and Co. Inc.

Worley Ltd.

Puerto Rico

10 Design

Arcadis NV

Bechtel

Black & Veatch

CDM Smith

Coffman Engineers Inc.

Day & Zimmermann

Fluor

GHD

Gensler

Geosyntec Consultants

HKS

Hart Howerton

Haskoning

Jensen Hughes

LEO A DALY

MG2

Merrick & Co.

Miyamoto International

Parsons Corp.

Perkins Eastman

Ramboll Group

Rebel Design+Group

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

Salas O'Brien

Sargent & Lundy

Simpson Gumpertz & Heger

TRC Cos. Inc.

Thornton Tomasetti

Tower Engineering Professionals

WATG

WSP Global Inc.

Weston Solutions Inc.

Woolpert

D. EUROPE

Albania

10 Design AFRY

Artelia

Arup

Associated Consulting Engineers

CES Consulting Engineers Salzgitter GmbH

COWI

DBA Group SpA

Deerns

Dolsar Engineering

Fichtner Group

Haskoning

ID&E Holdings

ILF Consulting Engineers

IRD Engineering

JSTI Group

Jensen Hughes

Mott MacDonald

Page

Politecnica Ingegneria

SETEC

Sweco AB

Tecnica y Proyectos SA (TYPSA)

Tractebel Engineering

WATG

Region Country Company

Armenia

Artelia

CES Consulting Engineers Salzgitter GmbH

COWI

Fichtner Group

Gensler

HKS

Haskoning

IRD Engineering

Jacobs Solutions Inc.

Rebel Design+Group

Sargent & Lundy

Austria

AFRY

ARX Group (formerly Pini Group)

Arcadis NV

Artelia

AtkinsRéalis

Bilfinger Engineering

Black & Veatch

Dorsch Global GmbH

Drees & Sommer

Egis Group

Fichtner Group

Fluor

GHD

Gensler

HDR

Haskoning

Hatch Ltd.

ILF Consulting Engineers

Italferr SpA

Jensen Hughes

Larsen & Toubro Ltd.

Lombardi Group

Mott MacDonald

RINA Consulting SpA

Ramboll Group

Rebel Design+Group

SIDARA

SLR

Region Country Company

Sweco AB

TRC Cos. Inc.

Tata Projects Ltd.

Technip Energies

Tractebel Engineering

Azerbaijan

AFRY

Arcadis NV

Bechtel

COWI

DBA Group SpA

Day & Zimmermann

Empresarios Agrupados

Internacional SA

Gensler

HKS

Haskoning

Heerim Architects & Planners Co. Ltd.

ILF Consulting Engineers

IRD Engineering

Jensen Hughes

Maire SpA

PROYAPI Engineering and Consultancy Inc.

Power Construction Corp. of China

RINA Consulting SpA

Ramboll Group

Sargent & Lundy

Technip Energies

Tekfen Muhendislik AS

Temelsu International Engineering Services Inc.

Thornton Tomasetti

Tractebel Engineering

Worley Ltd.

Yuksel Proje AS

Belarus

Beijing Institute of Architectural Design

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

Beijing Urban Construction Group Co. Ltd.

China Energy Engineering Corp. Ltd.

Empresarios Agrupados Internacional SA

JSTI Group

Belgium

AFRY

Arcadis NV

Archetype Group

Artelia

AtkinsRéalis

Baker Engineering & Risk Consultants Inc.

Barr Engineering Co.

Bilfinger Engineering

Black & Veatch

COWI

CRB

Coffman Engineers Inc.

Day & Zimmermann

Deerns

Dewberry

Dorsch Global GmbH

Drees & Sommer

Egis Group

Empresarios Agrupados Internacional SA

Fichtner Group

Fluor

GHD

Gensler

Geosyntec Consultants

Haskoning

Hatch Ltd.

ID&E Holdings

INGEROP

IRD Engineering

Ingenieria Y Economia Del Transporte SA (INECO)

Jacobs Solutions Inc.

Jan De Nul Group (Sofidra SA)

Region Country Company

Jensen Hughes

Langan

Lombardi Group

Maire SpA

Moffatt & Nichol

Mott MacDonald

PM Group

RINA Consulting SpA

Ramboll Group

SETEC

SIDARA

SLR

STUDIOS architecture

Samsung E&A Co. Ltd.

Sener Grupo de Ingeniería SA

Skidmore Owings & Merrill

Stantec Inc.

Sweco AB

TRC Cos. Inc.

Tata Projects Ltd.

Technip Energies

Tecnica y Proyectos SA (TYPSA)

Thornton Tomasetti

Tractebel Engineering

WSP Global Inc.

Worley Ltd.

Bosnia & Herzegovina

COWI

China Energy Engineering Corp. Ltd.

Dorsch Global GmbH

Egis Group

Energoprojekt Holding PLC

Fichtner Group

ID&E Holdings

ILF Consulting Engineers

IRD Engineering

JSTI Group

Langan

Oriental Consultants Global (OCHD)

Region Country Company

PROYAPI Engineering and Consultancy Inc.

Power Construction Corp. of China

RINA Consulting SpA

Technital SpA

Temelsu International

Engineering Services Inc.

Thornton Tomasetti

Tractebel Engineering

Yuksel Proje AS

Bulgaria

3TI PROGETTI

AFRY

Artelia

Bilfinger Engineering

Black & Veatch

COWI

DBA Group SpA

Day & Zimmermann

Dorsch Global GmbH

Egis Group

Empresarios Agrupados Internacional SA

Fichtner Group

Gensler

Geo-Logic Associates Inc.

HOK

Haskoning

ILF Consulting Engineers

Italferr SpA

Jensen Hughes

Meinhardt Group International

Mott MacDonald

PROGER SpA

RINA Consulting SpA

Ramboll Group

SIDARA

TRC Cos. Inc.

Tekfen Muhendislik AS

Tractebel Engineering

Worley Ltd.

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

Croatia

AFRY

Archetype Group

Bilfinger Engineering

COWI

China Railway Group Ltd.

DBA Group SpA

Day & Zimmermann

Dohwa Engineering Co. Ltd.

Dorsch Global GmbH

Egis Group

Haskoning

Ingenieria Y Economia Del Transporte SA (INECO)

JSTI Group

Jensen Hughes

Maire SpA

Moffatt & Nichol

Ramboll Group

Rebel Design+Group

SETEC

TRC Cos. Inc.

Technital SpA

Tecnica y Proyectos SA (TYPSA)

Tractebel Engineering

WATG

Yuksel Proje AS

Czech Rep.

AFRY

Artelia

Assystem

Bilfinger Engineering

COWI

Dorsch Global GmbH

Egis Group

Fichtner Group

Gensler

Haskoning

ILF Consulting Engineers

Jensen Hughes

Mott MacDonald

RINA Consulting SpA

Region Country Company

Ramboll Group

SETEC

SIDARA

STUDIOS architecture

Samsung E&A Co. Ltd.

Stantec Inc.

Sweco AB

TRC Cos. Inc.

Technip Energies

Tractebel Engineering

Worley Ltd.

Denmark

AFRY

Artelia

AtkinsRéalis

Beca Group Ltd.

Bilfinger Engineering

Black & Veatch

COWI

CRB

Day & Zimmermann

Deerns

Empresarios Agrupados Internacional SA

Fichtner Group

Fluor

GHD

Gensler

Geosyntec Consultants

HDR

Haskoning

Hatch Ltd.

ILF Consulting Engineers

INGEROP

IPS-Integrated Project

Services LLC

Ingenieria Y Economia Del Transporte SA (INECO)

Jacobs Solutions Inc.

Jan De Nul Group (Sofidra SA)

Jensen Hughes

Larsen & Toubro Ltd.

Merrick & Co.

Region Country Company

Moffatt & Nichol

Mott MacDonald

PM Group

Page

Parsons Corp.

Politecnica Ingegneria

Quadrante

RINA Consulting SpA

Ramboll Group

Rebel Design+Group

SIDARA

SYSTRA

Sener Grupo de Ingeniería SA

Sweco AB

TATA Consulting Engineers Ltd.

TRC Cos. Inc.

Technip Energies

Tecnica y Proyectos SA (TYPSA)

Thornton Tomasetti

Tractebel Engineering

WSP Global Inc.

Woolpert

Worley Ltd.

Estonia

3TI PROGETTI

AFRY

Archetype Group

Denzay Arch. and Engineering

Fichtner Group

Gensler

Langan

Ramboll Group

Sargent & Lundy

Sweco AB

TRC Cos. Inc.

Technip Energies

Tractebel Engineering

Yuksel Proje AS

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

Finland

AFRY

Arcadis NV

Assystem

Baker Engineering & Risk Consultants Inc.

Bilfinger Engineering

COWI

Fichtner Group

Fluor

Gensler

Geosyntec Consultants

HDR

HOK

Haskoning

Hatch Ltd.

ILF Consulting Engineers

Jacobs Solutions Inc.

Jensen Hughes

Mott MacDonald

RINA Consulting SpA

Ramboll Group

Rebel Design+Group

SIDARA

SYSTRA

Sargent & Lundy

Simpson Gumpertz & Heger

Stantec Inc.

Sweco AB

TATA Consulting Engineers Ltd.

TRC Cos. Inc.

Tata Projects Ltd.

Technip Energies

Tecnica y Proyectos SA (TYPSA)

Thornton Tomasetti

Tractebel Engineering

WSP Global Inc.

Worley Ltd.

France

AFRY

Region Country Company

ARX Group (formerly Pini Group)

Arcadis NV

Archetype Group

Artelia

Assystem

AtkinsRéalis

Baker Engineering & Risk Consultants Inc.

Bilfinger Engineering

Black & Veatch

COWI

China Aluminum International Eng'g Corp. Ltd.

China Petroleum Engineering Co. Ltd.

China State Construction Engineering Corp. Ltd.

Day & Zimmermann

Deerns

Drees & Sommer

Egis Group

Empresarios Agrupados Internacional SA

Fichtner Group

Fluor

GHD

Gensler

Geosyntec Consultants

Hart Howerton

Haskoning

Hatch Ltd.

Heerim Architects & Planners Co. Ltd.

ID&E Holdings

INGEROP

Ingenieria Y Economia Del Transporte SA (INECO)

Italferr SpA

Jacobs Solutions Inc.

Jensen Hughes

KEPCO Engineering & Construction Co. Inc.

Region Country Company

Kohn Pedersen Fox (KPF)

Langan

Larsen & Toubro Ltd.

Lombardi Group

Maire SpA

Mott MacDonald

PM Group

PROGER SpA

Page

Parsons Corp.

Populous

Quadrante

RINA Consulting SpA

Ramboll Group

Rebel Design+Group

SIDARA

SLR

STUDIOS architecture

SYSTRA

Salas O'Brien

Sener Grupo de Ingeniería SA

Simpson Gumpertz & Heger

Skidmore Owings & Merrill

Stantec Inc.

Sweco AB

TATA Consulting Engineers Ltd.

TPF SA

TRC Cos. Inc.

Tata Projects Ltd.

Technip Energies

Tecnica y Proyectos SA (TYPSA)

Thornton Tomasetti

Tractebel Engineering

WSP Global Inc.

Woolpert

Georgia

AFRY

Arcadis NV

Artelia

Arup

COWI

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

China National Chemical

Eng'g Group Corp. Ltd.

China Railway Construction Corp. Ltd.

China Railway Group Ltd.

DBA Group SpA

Dasan Consultants Co. Ltd.

Dohwa Engineering Co. Ltd.

Dorsch Global GmbH

Egis Group

Empresarios Agrupados Internacional SA

Fichtner Group

Haskoning

Hatch Ltd.

ID&E Holdings

ILF Consulting Engineers

IRD Engineering

JSTI Group

Jensen Hughes

Meinhardt Group International

Mott MacDonald

Nicholas O'Dwyer

Perkins Eastman

Populous

RINA Consulting SpA

Ramboll Group

Saman Corp.

Tekfen Muhendislik AS

Temelsu International Engineering Services Inc.

Tractebel Engineering

WATG

Yachiyo Engineering Co. Ltd.

Yooshin Engineering Corp.

Yuksel Proje AS

Germany

AFRY

Arcadis NV

Archetype Group

Artelia

Arup

Region Country Company

AtkinsRéalis

Baker Engineering & Risk Consultants Inc.

Barr Engineering Co.

Bechtel

Bilfinger Engineering

Black & Veatch

CDM Smith

COWI

CRB

China Energy Engineering Corp. Ltd.

China Nerin Engineering Co. Ltd.

DBA Group SpA

Day & Zimmermann

Deerns

Dewberry

Dorsch Global GmbH

Drees & Sommer

Egis Group

Empresarios Agrupados Internacional SA

Fichtner Group

Fluor

GHD

Gannett Fleming TranSystems (GFT)

Gensler

Grupo ACS/Hochtief

HDR

HOK

Haskoning

Hassan Allam Holding

Hatch Ltd.

ID&E Holdings

ILF Consulting Engineers

INGEROP

Jacobs Solutions Inc.

Jan De Nul Group (Sofidra SA)

Jensen Hughes

Kohn Pedersen Fox (KPF)

Langan

Larsen & Toubro Ltd.

Region Country Company

Leidos

Metallurgical Corp. of China Ltd.

Moffatt & Nichol

Mott MacDonald

PM Group

Parsons Corp.

Perkins Eastman

Populous

RINA Consulting SpA

Ramboll Group

Rebel Design+Group

SETEC

SIDARA SLR

SSOE Group

Salas O'Brien

Sener Grupo de Ingeniería SA

Stanley Consultants

Stantec Inc.

Sweco AB

TATA Consulting Engineers Ltd.

TRC Cos. Inc.

Tata Projects Ltd.

Technip Energies

Tekfen Muhendislik AS

Tetra Tech

Thornton Tomasetti

Tractebel Engineering

Versar Global Solutions

WSP Global Inc.

Weston Solutions Inc.

Woolpert

Worley Ltd.

Greece

AFRY

AMG Al Amar Consulting Group SA

Arcadis NV

Artelia

Associated Consulting Engineers

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

AtkinsRéalis

Bilfinger Engineering

CHA Consulting Inc.

China Communications Construction Group Ltd.

China Energy Engineering Corp. Ltd.

Day & Zimmermann

Dorsch Global GmbH

Drees & Sommer

Egis Group

Empresarios Agrupados Internacional SA

Fichtner Group

Fluor

Gensler

HKS

Haskoning

Hatch Ltd.

ILF Consulting Engineers

Ingenieria Y Economia Del Transporte SA (INECO)

JSTI Group

Jensen Hughes

Kohn Pedersen Fox (KPF)

ME Engineers

Maire SpA

Moffatt & Nichol

Mott MacDonald

PGESCO

PROGER SpA

Parsons Corp.

RINA Consulting SpA

Ramboll Group

SETEC

SIDARA

Stantec Inc.

TPF SA

TRC Cos. Inc.

Technip Energies

Tecnica y Proyectos SA (TYPSA)

Thornton Tomasetti

Tractebel Engineering

Region Country Company

WATG

Hungary

ACPV Architects Srl

AFRY

Artelia

Bilfinger Engineering

Black & Veatch

COWI

China Energy Engineering Corp. Ltd.

China Railway Construction Corp. Ltd.

China Railway Design Corp.

Dorsch Global GmbH

Drees & Sommer

Egis Group

Fichtner Group

Gensler

Haskoning

Hatch Ltd.

Heerim Architects & Planners Co. Ltd.

Jensen Hughes

Mott MacDonald

Power Construction Corp. of China

RINA Consulting SpA

Ramboll Group

SIDARA

STUDIOS architecture

Samsung E&A Co. Ltd.

TRC Cos. Inc.

WATG

WSP Global Inc.

Ireland

AFRY

AYESA

Actalent Services

Arcadis NV

Associated Consulting Engineers

AtkinsRéalis

Region Country Company

Baker Engineering & Risk Consultants Inc.

Beca Group Ltd.

Black & Veatch

CDM Smith

CHA Consulting Inc.

COWI

CRB

CTI Engineering Group

DBA Group SpA

Drees & Sommer

Egis Group

Fichtner Group

Fluor

GEI Consultants Inc.

GHD

Gensler

Geosyntec Consultants

HDR

HKS

HOK

Haskoning

Hatch Ltd.

ID&E Holdings

ILF Consulting Engineers

IPS-Integrated Project Services LLC

Ingenieria Y Economia Del Transporte SA (INECO)

Jacobs Solutions Inc.

Jensen Hughes

ME Engineers

Mott MacDonald

Nicholas O'Dwyer

PM Group

Parsons Corp.

Perkins Eastman

Populous

Quadrante

RINA Consulting SpA

Ramboll Group

SETEC

SIDARA

SLR

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

SSOE Group

STUDIOS architecture

SYSTRA

Sener Grupo de Ingeniería SA

Stantec Inc.

Sweco AB

TRC Cos. Inc.

Tata Projects Ltd.

Tecnica y Proyectos SA (TYPSA)

Tetra Tech

Thornton Tomasetti

Tractebel Engineering

WATG

WSP Global Inc.

Woolpert

Worley Ltd.

Yuksel Proje AS

luis vidal + architects

Italy

10 Design

3TI PROGETTI

ACPV Architects Srl

AFRY

ARX Group (formerly Pini Group)

AYESA

Arcadis NV

Archetype Group

Artelia

AtkinsRéalis

Baker Engineering & Risk Consultants Inc.

Black & Veatch

CHA Consulting Inc.

COWI

CRB

China Aluminum International Eng'g Corp. Ltd.

DBA Group SpA

Day & Zimmermann

Deerns

Region Country Company

Drees & Sommer

Egis Group

Empresarios Agrupados

Internacional SA

Fichtner Group

Fluor

GHD

Gannett Fleming TranSystems (GFT)

Gensler

Ghafari Associates LLC

HKS

HOK

Haskoning

Hatch Ltd.

ILF Consulting Engineers

INGEROP

IRD Engineering

Italconsult SpA

Italferr SpA

Jacobs Solutions Inc.

Jensen Hughes

Kohn Pedersen Fox (KPF)

Langan

Larsen & Toubro Ltd.

Lombardi Group

ME Engineers

Maire SpA

Metallurgical Corp. of China Ltd.

Moffatt & Nichol

Mott MacDonald

Page

Politecnica Ingegneria

Populous

RINA Consulting SpA

Ramboll Group

Rebel Design+Group

SETEC

SIDARA

STUDIOS architecture

SYSTRA

Salas O'Brien

Samoo Architects & Engineers

Region Country Company

Sener Grupo de Ingeniería SA

Simpson Gumpertz & Heger

Skidmore Owings & Merrill

Stanley Consultants

Stantec Inc.

TATA Consulting Engineers Ltd.

TRC Cos. Inc.

Tata Projects Ltd.

Technip Energies

Technital SpA

Thornton Tomasetti

Tractebel Engineering

Versar Global Solutions

WATG

WSP Global Inc.

Latvia

3TI PROGETTI

AFRY

Egis Group

Fichtner Group

Gensler

Haskoning

INGEROP

IRD Engineering

Ingenieria Y Economia Del Transporte SA (INECO)

Italferr SpA

Jensen Hughes

Mott MacDonald

RINA Consulting SpA

Ramboll Group

SETEC

SIDARA

Sener Grupo de Ingeniería SA

Yuksel Proje AS

Lithuania

3TI PROGETTI

AFRY

COWI

China Energy Engineering Corp. Ltd.

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

Denzay Arch. and Engineering

Fichtner Group

Gensler

Haskoning

ILF Consulting Engineers

Jensen Hughes

Moffatt & Nichol

Ramboll Group

SIDARA

Sener Grupo de Ingeniería SA

Stantec Inc.

Sweco AB

TATA Consulting Engineers Ltd.

Tractebel Engineering

Yuksel Proje AS

Luxembourg

Gensler

Jensen Hughes

TRC Cos. Inc.

Moldova

Black & Veatch

CES Consulting Engineers

Salzgitter GmbH

COWI

Dorsch Global GmbH

Fichtner Group

Haskoning

ID&E Holdings

INGEROP

IRD Engineering

JSTI Group

Jensen Hughes

Langan

Meinhardt Group

International

PADECO Co. Ltd.

Ramboll Group

SETEC

Temelsu International Engineering Services Inc.

Region Country Company

Thornton Tomasetti

Netherlands

AFRY

Arcadis NV

Archetype Group

Artelia

AtkinsRéalis

Baker Engineering & Risk Consultants Inc.

Beca Group Ltd.

Bilfinger Engineering

Black & Veatch

COWI

CRB

CTCI Corp.

Coffman Engineers Inc.

Deerns

ENTRUST Solutions Group

Egis Group

Empresarios Agrupados Internacional SA

Fichtner Group

Fluor

Gensler

Geosyntec Consultants

HDR

HKS

HOK

Haskoning

Hatch Ltd.

ID&E Holdings

ILF Consulting Engineers

Ingenieria Y Economia Del Transporte SA (INECO)

Jacobs Solutions Inc.

Jan De Nul Group (Sofidra SA)

Jensen Hughes

KEPCO Engineering & Construction Co. Inc.

Larsen & Toubro Ltd.

MG2

Maire SpA

Moffatt & Nichol

Region Country Company

Mott MacDonald

PM Group

RINA Consulting SpA

Ramboll Group

Rebel Design+Group

SIDARA

SLR

Salas O'Brien

Sargent & Lundy

Sener Grupo de Ingeniería SA

Skidmore Owings & Merrill

Stantec Inc.

Sweco AB

TATA Consulting Engineers Ltd.

TRC Cos. Inc.

Tata Projects Ltd.

Technip Energies

Tetra Tech

Thornton Tomasetti

Tractebel Engineering

WSP Global Inc.

Worley Ltd.

Yuksel Proje AS

North Macedonia

Artelia

CES Consulting Engineers

Salzgitter GmbH

COWI

Egis Group

Fichtner Group

Haskoning

Hatch Ltd.

IRD Engineering

JSTI Group

Mott MacDonald

PADECO Co. Ltd.

RINA Consulting SpA

Tecnica y Proyectos SA (TYPSA)

Norway

AFRY

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

ARX Group (formerly Pini Group)

Artelia

Arup

AtkinsRéalis

Baker Engineering & Risk Consultants Inc.

Bilfinger Engineering

COWI

CRB

Deerns

Drees & Sommer

Egis Group

Empresarios Agrupados Internacional SA

Fluor

Gensler

Geosyntec Consultants

HDR

HKS

Hart Howerton

Haskoning

Hatch Ltd.

ILF Consulting Engineers

Larsen & Toubro Ltd.

Maire SpA

Moffatt & Nichol

Mott MacDonald

Populous

RINA Consulting SpA

Ramboll Group

Rebel Design+Group

SETEC

SIDARA

SYSTRA

Sener Grupo de Ingeniería SA

Stanley Consultants

Stantec Inc.

Sweco AB

TRC Cos. Inc.

Tata Projects Ltd.

Tecnica y Proyectos SA (TYPSA)

Thornton Tomasetti

Region Country Company

Tractebel Engineering

WSP Global Inc.

Worley Ltd.

Poland

AFRY

AYESA

Arcadis NV

Artelia

Arup

Bechtel

Bilfinger Engineering

Black & Veatch

CDM Smith

COWI

China National Chemical Eng'g Group Corp. Ltd.

China Railway Construction Corp. Ltd.

China Railway Group Ltd.

Coffman Engineers Inc.

Day & Zimmermann

Dohwa Engineering Co. Ltd.

Dorsch Global GmbH

Drees & Sommer

Egis Group

Empresarios Agrupados Internacional SA

Fichtner Group

Fluor

Gannett Fleming TranSystems (GFT)

Gensler

HDR

HOK

Haskoning

Hatch Ltd.

ID&E Holdings

ILF Consulting Engineers

INGEROP

Ingenieria Y Economia Del Transporte SA (INECO)

Jacobs Solutions Inc.

Jan De Nul Group (Sofidra SA)

Region Country Company

Jensen Hughes

Larsen & Toubro Ltd.

Maire SpA

Mott MacDonald

PADECO Co. Ltd.

PM Group

RINA Consulting SpA

Ramboll Group

SETEC

SIDARA

SSOE Group

STUDIOS architecture

SYSTRA

Samsung E&A Co. Ltd.

Simpson Gumpertz & Heger

Skidmore Owings & Merrill

Stantec Inc.

Sweco AB

TPF SA

TRC Cos. Inc.

Tractebel Engineering

WSP Global Inc.

Weston Solutions Inc.

Woolpert

Worley Ltd.

Portugal

10 Design

AFRY

ARX Group (formerly Pini Group)

AYESA

Arcadis NV

Archetype Group

Artelia

Black & Veatch

COWI

Deerns

Egis Group

Empresarios Agrupados Internacional SA

Fichtner Group

Fluor

Gensler

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

Geosyntec Consultants

HDR

Hart Howerton

Haskoning

Hatch Ltd.

ID&E Holdings

ILF Consulting Engineers

IPS-Integrated Project Services LLC

Ingenieria Y Economia Del Transporte SA (INECO)

JSTI Group

Jensen Hughes

Kohn Pedersen Fox (KPF)

Langan

Maire SpA

Meinhardt Group

International

Moffatt & Nichol

Mott MacDonald

PCG Profabril Consulplano

Global SA

RINA Consulting SpA

Ramboll Group

Rebel Design+Group

SETEC

SIDARA

SYSTRA

Sener Grupo de Ingeniería SA

TATA Consulting Engineers Ltd.

TPF SA

TRC Cos. Inc.

Technip Energies

Tecnica y Proyectos SA (TYPSA)

Thornton Tomasetti

Tractebel Engineering

WATG

WSP Global Inc.

Romania

3TI PROGETTI

AFRY

Region Country Company

Artelia

Black & Veatch

COWI

DBA Group SpA

Dorsch Global GmbH

Egis Group

Empresarios Agrupados Internacional SA

Fichtner Group

Fluor

Gensler

Haskoning

ILF Consulting Engineers

IRD Engineering

Italconsult SpA

Italferr SpA

JSTI Group

Jacobs Solutions Inc.

Jensen Hughes

KEPCO Engineering & Construction Co. Inc.

Meinhardt Group International

Moffatt & Nichol

Mott MacDonald

Oriental Consultants Global (OCHD)

PADECO Co. Ltd.

PROGER SpA

Politecnica Ingegneria

Quadrante

RINA Consulting SpA

Ramboll Group

SETEC

SIDARA

SYSTRA

Sargent & Lundy

Sener Grupo de Ingeniería SA

Sweco AB

TPF SA

TRC Cos. Inc.

Technip Energies

Technital SpA

Region Country Company

Tecnica y Proyectos SA (TYPSA)

Tekfen Muhendislik AS

Tractebel Engineering

Versar Global Solutions

WSP Global Inc.

Yuksel Proje AS

Russia

Artelia

China Aluminum

International Eng'g Corp. Ltd.

China Communications

Construction Group Ltd.

China Energy Engineering Corp. Ltd.

China National Chemical Eng'g Group Corp. Ltd.

China Nerin Engineering Co. Ltd.

China Railway Group Ltd.

DBA Group SpA

Fluor

ID&E Holdings

Maire SpA

Metallurgical Corp. of China Ltd.

RINA Consulting SpA

TRC Cos. Inc.

Tractebel Engineering

Serbia

AFRY

Bechtel

CES Consulting Engineers

Salzgitter GmbH

COWI

China Energy Engineering Corp. Ltd.

China Nerin Engineering Co. Ltd.

China Railway Design Corp.

DBA Group SpA

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

Denzay Arch. and Engineering

Dorsch Global GmbH

Egis Group

Empresarios Agrupados Internacional SA

Energoprojekt Holding PLC

Fichtner Group

Gensler

HOK

Haskoning

Hatch Ltd.

ILF Consulting Engineers

IRD Engineering

Italconsult SpA

Italferr SpA

Jensen Hughes

M3 Engineering and Technology Corp.

Maire SpA

Manens SpA

Metallurgical Corp. of China Ltd.

Mott MacDonald

Oriental Consultants Global (OCHD)

Populous

RINA Consulting SpA

Ramboll Group

SIDARA

Stantec Inc.

Technital SpA

Tecnica y Proyectos SA (TYPSA)

Tractebel Engineering

WATG

WSP Global Inc.

Slovakia

AFRY

Bilfinger Engineering

Black & Veatch

Dorsch Global GmbH

Region Country Company

Empresarios Agrupados

Internacional SA

Fichtner Group

GHD

Gensler

Hatch Ltd.

ILF Consulting Engineers

Mott MacDonald

Ramboll Group

SETEC

SIDARA

Sargent & Lundy

TRC Cos. Inc.

Technip Energies

Slovenia

AFRY

Black & Veatch

DBA Group SpA

Dorsch Global GmbH

Egis Group

Gensler

Hatch Ltd.

ID&E Holdings

ILF Consulting Engineers

Jensen Hughes

Ramboll Group

Rebel Design+Group

SIDARA

Sargent & Lundy

Sener Grupo de Ingeniería SA

Tata Projects Ltd.

Tractebel Engineering

Spain

10 Design

AFRY

AYESA

Arcadis NV

Archetype Group

Artelia

Arup

Associated Consulting Engineers

Region Country Company

Baker Engineering & Risk Consultants Inc.

Barr Engineering Co.

Bilfinger Engineering

Black & Veatch

COWI

CRB

China Aluminum International Eng'g Corp. Ltd.

China Energy Engineering Corp. Ltd.

China Nerin Engineering Co. Ltd.

China Railway Construction Corp. Ltd.

China Triumph International Engineering Co. Ltd.

Coffman Engineers Inc.

Day & Zimmermann

Deerns

Drees & Sommer

Egis Group

Empresarios Agrupados Internacional SA

Fichtner Group

Fluor

Gannett Fleming TranSystems (GFT)

Gensler

Geosyntec Consultants

HDR

HKS

Haskoning

Hatch Ltd.

ILF Consulting Engineers

INGEROP

IPS-Integrated Project Services LLC

Ingenieria Y Economia Del Transporte SA (INECO)

JSTI Group

Jacobs Solutions Inc.

Jensen Hughes

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

Larsen & Toubro Ltd.

Lombardi Group

M3 Engineering and Technology Corp.

ME Engineers

Moffatt & Nichol

Mott MacDonald

Oriental Consultants Global (OCHD)

Page

Populous Quadrante

RINA Consulting SpA

Ramboll Group

Rebel Design+Group

SETEC

SIDARA

SSOE Group

SYSTRA

Sargent & Lundy

Stanley Consultants

Sweco AB

TATA Consulting Engineers Ltd.

TPF SA

TRC Cos. Inc.

Tata Projects Ltd.

Technip Energies

Tecnica y Proyectos SA (TYPSA)

Thornton Tomasetti

Tractebel Engineering

Versar Global Solutions

WATG

WSP Global Inc.

Worley Ltd.

luis vidal + architects

Sweden

AFRY

Arcadis NV

Artelia

AtkinsRéalis

Bilfinger Engineering

Region Country Company

Black & Veatch

COWI

Drees & Sommer

Empresarios Agrupados Internacional SA

Fichtner Group

Fluor

Gensler

Geosyntec Consultants

HDR

HOK

Haskoning

Hatch Ltd.

ID&E Holdings

ILF Consulting Engineers

Jacobs Solutions Inc.

Jensen Hughes

Larsen & Toubro Ltd.

Mott MacDonald

Perkins Eastman

RINA Consulting SpA

Ramboll Group

SIDARA

SYSTRA

Samsung E&A Co. Ltd.

Simpson Gumpertz & Heger

Skidmore Owings & Merrill

Sweco AB

TATA Consulting Engineers

Ltd.

TPF SA

TRC Cos. Inc.

Tata Projects Ltd.

Technip Energies

Tecnica y Proyectos SA (TYPSA)

Thornton Tomasetti

Tractebel Engineering

WSP Global Inc.

Woolpert

Worley Ltd.

Switzerland

10 Design

Region Country Company

ACPV Architects Srl

AFRY

ARX Group (formerly Pini Group)

Arcadis NV

Archetype Group

Artelia

Assystem

AtkinsRéalis

COWI

CRB

Coffman Engineers Inc.

Day & Zimmermann

Deerns

Drees & Sommer

Egis Group

Empresarios Agrupados Internacional SA

Fichtner Group

Fluor

Gensler

Haskoning

Hatch Ltd.

ILF Consulting Engineers

INGEROP

IPS-Integrated Project Services LLC

Italferr SpA

Jacobs Solutions Inc.

Jensen Hughes

Larsen & Toubro Ltd.

Lombardi Group

Moffatt & Nichol

Mott MacDonald

PM Group

PROGER SpA

RINA Consulting SpA

Ramboll Group

Rebel Design+Group

SETEC

SIDARA

STUDIOS architecture

Skidmore Owings & Merrill

Stantec Inc.

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

Sweco AB

TATA Consulting Engineers

Ltd.

TRC Cos. Inc.

Thornton Tomasetti

Tractebel Engineering

WSP Global Inc.

Ukraine

AFRY

Artelia

Bilfinger Engineering

COWI

China Energy Engineering Corp. Ltd.

Deerns

Dohwa Engineering Co. Ltd.

Dolsar Engineering

Egis Group

Fichtner Group

Haskoning

ID&E Holdings

ILF Consulting Engineers

JSTI Group

Miyamoto International

Oriental Consultants Global (OCHD)

PADECO Co. Ltd.

Parsons Corp.

RINA Consulting SpA

Ramboll Group

SETEC

Sargent & Lundy

Sweco AB

Tractebel Engineering

Yachiyo Engineering Co. Ltd.

Yooshin Engineering Corp.

Yuksel Proje AS

United Kingdom

10 Design

AFRY

AYESA

Actalent Services

Region Country Company

Arcadis NV

Artelia

Arup

Associated Consulting Engineers

Assystem

AtkinsRéalis

Baker Engineering & Risk Consultants Inc.

Beca Group Ltd.

Bechtel

Bilfinger Engineering

Black & Veatch

Burns & McDonnell

CHA Consulting Inc.

COWI

CTI Engineering Group

China Petroleum Engineering Co. Ltd.

DBA Group SpA

DeSimone Consulting Engineering

Deerns

Dohwa Engineering Co. Ltd.

Dorsch Global GmbH

Drees & Sommer

Egis Group

Empresarios Agrupados Internacional SA

Fichtner Group

Fluor

GEI Consultants Inc.

GHD

Gensler

Geosyntec Consultants

HDR

HKS

HOK

Hart Howerton

Haskoning

Hassan Allam Holding

Hatch Ltd.

ID&E Holdings

ILF Consulting Engineers

Region Country Company

INGEROP

IPS-Integrated Project Services LLC

Ingenieria Y Economia Del Transporte SA (INECO)

Jacobs Solutions Inc.

Jan De Nul Group (Sofidra SA)

Jensen Hughes

Kajima Corp.

Kohn Pedersen Fox (KPF)

Langan

Larsen & Toubro Ltd.

Leidos

ME Engineers

Maire SpA

Meinhardt Group International

Merrick & Co.

Moffatt & Nichol

Mott MacDonald

NBBJ

NORR

Nicholas O'Dwyer

Offshore Oil Engineering Co. Ltd.

PGESCO

PM Group

Parsons Corp.

Populous

Power Construction Corp. of China

Quadrante

RINA Consulting SpA

Ramboll Group

Rebel Design+Group

SETEC

SIDARA SLR

SYSTRA

Salas O'Brien

Sener Grupo de Ingeniería SA

Simpson Gumpertz & Heger

Skidmore Owings & Merrill

Stanley Consultants

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

Stantec Inc.

Surbana Jurong Private Ltd.

Sweco AB

TATA Consulting Engineers Ltd.

TRC Cos. Inc.

Tata Projects Ltd.

Technip Energies

Technital SpA

Tecnica y Proyectos SA (TYPSA)

Tekfen Muhendislik AS

Tetra Tech

Thornton Tomasetti

Tractebel Engineering

WATG

WSP Global Inc.

Weston Solutions Inc.

Woolpert

Worley Ltd.

E. MIDDLEEAST

Afghanistan

Black & Veatch

Fichtner Group

ILF Consulting Engineers

JSTI Group

Jensen Hughes

Miyamoto International

Sweco AB

Versar Global Solutions

Bahrain

AFRY

AJi Group

AYESA

Arcadis NV

Artelia

Associated Consulting Engineers

AtkinsRéalis

Bechtel

Region Country Company

Bilfinger Engineering

COWI

Egis Group

Energoprojekt Holding PLC

Euro Group Eng'g Consultancy

Gensler

Haskoning

Hatch Ltd.

ILF Consulting Engineers

JGC Holdings Corp.

Jensen Hughes

KEO International Consultants

Khatib & Alami

MIMAR Group

Meinhardt Group International

Mott MacDonald

PCG Profabril Consulplano Global SA

Pace

Parsons Corp.

Populous

Ramboll Group

SETEC

SIDARA

SSH

Samsung E&A Co. Ltd.

Sargent & Lundy

Skidmore Owings & Merrill

Stantec Inc.

TATA Consulting Engineers Ltd.

TRC Cos. Inc.

Tata Projects Ltd.

Technip Energies

Tractebel Engineering

WATG

Worley Ltd.

Zutari (Pty) Ltd.

Cyprus

10 Design

Region Country Company

AFRY

AMG Al Amar Consulting Group SA

Artelia

Associated Consulting Engineers

Black & Veatch

China Energy Engineering Corp. Ltd.

Dar Al Omran Rasem Badran

Day & Zimmermann

Dolsar Engineering

Empresarios Agrupados Internacional SA

Fichtner Group

HKS

Jensen Hughes

Langan

Meinhardt Group International

Mott MacDonald

RINA Consulting SpA

Ramboll Group

SIDARA

Stantec Inc.

Thornton Tomasetti

Tractebel Engineering

WATG

Iran

Haskoning

ID&E Holdings

ILF Consulting Engineers

Oriental Consultants Global (OCHD)

Ramboll Group

Tractebel Engineering

Iraq

AJi Group

AMG Al Amar Consulting Group SA

Al-Mustashar Lil-Handasah Co. (Engicon)

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

Artelia

Associated Consulting Engineers

AtkinsRéalis

Bilfinger Engineering

Black & Veatch

CES Consulting Engineers

Salzgitter GmbH

CHA Consulting Inc.

COWI

China Energy Engineering Corp. Ltd.

China National Chemical Eng'g Group Corp. Ltd.

China Petroleum Engineering Co. Ltd.

China Railway Group Ltd.

China State Construction Engineering Corp. Ltd.

DBA Group SpA

DLR Group

Dar Al Omran Rasem Badran

Dasan Consultants Co. Ltd.

Day & Zimmermann

Dewan Architects + Engineers

Distance Studio Consultants

Dohwa Engineering Co. Ltd.

Dorsch Global GmbH

EHAF Consulting Engineers

Energoprojekt Holding PLC

Euro Consult for Engineering Consultancy

Fichtner Group

Gensler

Ghafari Associates LLC

HKS

HSS Engineers Berhad

Haskoning

Hassan Allam Holding

ID&E Holdings

ILF Consulting Engineers

Italconsult SpA

Jacobs Solutions Inc.

Jensen Hughes

Region Country Company

Khatib & Alami

Kunhwa Engineering & Consulting Co. Ltd.

Langan

MIMAR Group

Maire SpA

Meinhardt Group International

Moffatt & Nichol

Oriental Consultants Global (OCHD)

PGESCO

Page

Parsons Corp.

RINA Consulting SpA

SIDARA

Samsung E&A Co. Ltd.

Sargent & Lundy

Shaker Group

Technip Energies

Technital SpA

Tekfen Muhendislik AS

Thornton Tomasetti

Versar Global Solutions

WATG

Yooshin Engineering Corp.

Yuksel Proje AS

Israel

AFRY

ARX Group (formerly Pini Group)

Arcadis NV

Artelia

Black & Veatch

CDM Smith

COWI

CRB

China Communications

Construction Group Ltd.

Dorsch Global GmbH

ENTRUST Solutions Group

Egis Group

GHD

Region Country Company

HDR

HKS

Haskoning

ILF Consulting Engineers

INGEROP

Jacobs Solutions Inc.

Jensen Hughes

Kohn Pedersen Fox (KPF)

Kunhwa Engineering & Consulting Co. Ltd.

Langan

Manens SpA

Moffatt & Nichol

Page

Populous

RINA Consulting SpA

Ramboll Group

SETEC

SSOE Group

Sargent & Lundy

Sener Grupo de Ingeniería SA

Skidmore Owings & Merrill

Stantec Inc.

Sweco AB

TRC Cos. Inc.

Thornton Tomasetti

Tractebel Engineering

WSP Global Inc.

Jordan

AJi Group

Al-Mustashar Lil-Handasah Co. (Engicon)

Arcadis NV

Artelia

Associated Consulting Engineers

Bilfinger Engineering

Black & Veatch

CDM Smith

COWI

Consolidated Contractors

Group

Dar Al Omran Rasem Badran

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

Dorsch Global GmbH

Egis Group

Eng'g for the Petroleum & Process Industries (Enppi)

Euro Group Eng'g Consultancy

Fichtner Group

Gensler

Geosyntec Consultants

Haskoning

Hatch Ltd.

ID&E Holdings

ILF Consulting Engineers

JSTI Group

Jensen Hughes

Kunhwa Engineering & Consulting Co. Ltd.

Mott MacDonald

PADECO Co. Ltd.

RINA Consulting SpA

Ramboll Group

SETEC

SETS

SIDARA

Stantec Inc.

Sweco AB

TRC Cos. Inc.

Tractebel Engineering

Versar Global Solutions

Weston Solutions Inc.

Kuwait

AJi Group

AMG Al Amar Consulting Group SA

Arcadis NV

Associated Consulting Engineers

AtkinsRéalis

Beijing Institute of Architectural Design

Bilfinger Engineering

Black & Veatch

CDM Smith

Region Country Company

CHA Consulting Inc.

COWI

China Aluminum

International Eng'g Corp. Ltd.

China Communications

Construction Group Ltd.

China Petroleum Engineering Co. Ltd.

Consolidated Contractors Group

Deerns

Dorsch Global GmbH

Egis Group

Empresarios Agrupados Internacional SA

Ennead Architects LLP

Fichtner Group

Fluor

Gensler

Geosyntec Consultants

HDR

HOK

Haskoning

Hatch Ltd.

ILF Consulting Engineers

Ingenieria Y Economia Del Transporte SA (INECO)

Italconsult SpA

Jacobs Solutions Inc.

Jensen Hughes

KEO International Consultants

Khatib & Alami

Mott MacDonald

Oriental Consultants Global (OCHD)

PROYAPI Engineering and Consultancy Inc.

Parsons Corp.

Perkins Eastman

RINA Consulting SpA

Ramboll Group

Rebel Design+Group

Region Country Company

SETEC

SIDARA

SSH

SYSTRA

Samsung E&A Co. Ltd.

Sargent & Lundy

Simpson Gumpertz & Heger

Skidmore Owings & Merrill

Stantec Inc.

Surbana Jurong Private Ltd.

Sweco AB

TATA Consulting Engineers Ltd.

TRC Cos. Inc.

Tata Projects Ltd.

Technip Energies

Tekfen Muhendislik AS

Tractebel Engineering

Versar Global Solutions

WSP Global Inc.

Worley Ltd.

Yuksel Proje AS

Zutari (Pty) Ltd.

Lebanon

Artelia

Associated Consulting Engineers

Bilfinger Engineering

CHA Consulting Inc.

Dar Al Omran Rasem Badran

Day & Zimmermann

Egis Group

Haskoning

JSTI Group

Khatib & Alami

Miyamoto International

RINA Consulting SpA

SIDARA

TRC Cos. Inc.

Temelsu International

Engineering Services Inc.

Thornton Tomasetti

Tractebel Engineering

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

Oman

10 Design

AFRY

AJi Group

AMG Al Amar Consulting Group SA

Al-Mustashar Lil-Handasah Co. (Engicon)

Archetype Group

Artelia

Associated Consulting Engineers

AtkinsRéalis

Barr Engineering Co.

Bechtel

Bilfinger Engineering

Black & Veatch

CDM Smith

COWI

CTCI Corp.

China Aluminum International Eng'g Corp. Ltd.

China Energy Engineering Corp. Ltd.

China National Chemical Eng'g Group Corp. Ltd.

Dar Al Omran Rasem Badran

Distance Studio Consultants

Dolsar Engineering

Dorsch Global GmbH

EHAF Consulting Engineers

Egis Group

Energoprojekt Holding PLC

Fichtner Group

Fluor

GHD

Gensler

HKS

Haskoning

Hatch Ltd.

ID&E Holdings

ILF Consulting Engineers

JSTI Group

Region Country Company

Jacobs Solutions Inc.

KEO International Consultants

Khatib & Alami

Larsen & Toubro Ltd.

Maire SpA

Meinhardt Group

International

Mott MacDonald

National Engineering Services

Pakistan (Pvt.) Ltd.

Oriental Consultants Global (OCHD)

Parsons Corp.

Populous

Power Construction Corp. of China

RINA Consulting SpA

Ramboll Group

Rebel Design+Group

SIDARA

SSH

SYSTRA

Samsung E&A Co. Ltd.

Sargent & Lundy

Sener Grupo de Ingeniería SA

Shaker Group

Skidmore Owings & Merrill

Surbana Jurong Private Ltd.

Sweco AB

TATA Consulting Engineers Ltd.

TRC Cos. Inc.

Tata Projects Ltd.

Tekfen Muhendislik AS

Thornton Tomasetti

Tractebel Engineering

WATG

Worley Ltd.

Yuksel Proje AS

Zutari (Pty) Ltd.

Pakistan

AFRY

Region Country Company

Artelia

AtkinsRéalis

Beca Group Ltd.

Black & Veatch

CDM Smith

CISPDR Corporation

COWI

CTI Engineering Group

China Aluminum

International Eng'g Corp. Ltd.

China Communications

Construction Group Ltd.

China Energy Engineering Corp. Ltd.

China National Chemical Eng'g Group Corp. Ltd.

China National Machinery Industry Corp.

China Railway Group Ltd.

China State Construction Engineering Corp. Ltd.

Dasan Consultants Co. Ltd.

Day & Zimmermann

Dohwa Engineering Co. Ltd.

Dolsar Engineering

Fichtner Group

HKS

Haskoning

ID&E Holdings

ILF Consulting Engineers

JSTI Group

Jensen Hughes

Kunhwa Engineering & Consulting Co. Ltd.

Maire SpA

Meinhardt Group

International

Metallurgical Corp. of China Ltd.

Mott MacDonald

National Engineering Services

Pakistan (Pvt.) Ltd.

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

Oriental Consultants Global (OCHD)

PADECO Co. Ltd.

Power Construction Corp. of China

RINA Consulting SpA

Ramboll Group

SIDARA SSH

Saman Corp.

Stantec Inc.

Surbana Jurong Private Ltd.

Sweco AB

Temelsu International Engineering Services Inc.

Tractebel Engineering

Qatar

3TI PROGETTI

AJi Group

AMG Al Amar Consulting Group SA

AYESA

Al-Mustashar Lil-Handasah Co. (Engicon)

Arcadis NV

Artelia

Associated Consulting Engineers

AtkinsRéalis

Baker Engineering & Risk Consultants Inc.

Beijing Institute of Architectural Design

Bilfinger Engineering

CDM Smith

CHA Consulting Inc.

COWI

CTCI Corp.

China Energy Engineering Corp. Ltd.

China National Chemical Eng'g Group Corp. Ltd.

Region Country Company

Consolidated Contractors Group

Dar Al Omran Rasem Badran

Day & Zimmermann

Distance Studio Consultants

Dorsch Global GmbH

EHAF Consulting Engineers

Egis Group

Empresarios Agrupados Internacional SA

Energoprojekt Holding PLC

Fichtner Group

Fluor

GHD

Gannett Fleming TranSystems (GFT)

Gensler

HOK

Haskoning

Heerim Architects & Planners Co. Ltd.

ILF Consulting Engineers

Italconsult SpA

Italferr SpA

Jacobs Solutions Inc.

Jensen Hughes

KEO International Consultants

Khatib & Alami

LEO A DALY

Langan

ME Engineers

MIMAR Group

Maire SpA

Manens SpA

Meinhardt Group International

Mott MacDonald

National Engineering Services Pakistan (Pvt.) Ltd.

Offshore Oil Engineering Co. Ltd.

Oriental Consultants Global (OCHD)

Region Country Company

Parsons Corp.

Perkins Eastman

RINA Consulting SpA

Ramboll Group

Rebel Design+Group

SIDARA

SYSTRA

Samsung E&A Co. Ltd.

Sener Grupo de Ingeniería SA

Shaker Group

Simpson Gumpertz & Heger

Skidmore Owings & Merrill

Stantec Inc.

TATA Consulting Engineers Ltd.

TRC Cos. Inc.

Tata Projects Ltd.

Technip Energies

Technital SpA

Tekfen Muhendislik AS

Thornton Tomasetti

Tractebel Engineering

Versar Global Solutions

WATG

WSP Global Inc.

Worley Ltd.

Zutari (Pty) Ltd.

Saudi Arabia

10 Design

3TI PROGETTI

ACPV Architects Srl

AFRY

AJi Group

AMG Al Amar Consulting Group SA

ARX Group (formerly Pini Group)

AYESA

Al-Mustashar Lil-Handasah Co. (Engicon)

Arcadis NV

Archetype Group

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

Architecture & Planning Group

Artelia

Associated Consulting Engineers

Assystem

AtkinsRéalis

Baker Engineering & Risk Consultants Inc.

Bechtel

Beijing Institute of Architectural Design

Bilfinger Engineering

Black & Veatch

CDM Smith

CHA Consulting Inc.

COWI

CTCI Corp.

China Aluminum International Eng'g Corp. Ltd.

China Communications Construction Group Ltd.

China Energy Engineering Corp. Ltd.

China National Chemical Eng'g Group Corp. Ltd.

China Petroleum Engineering Co. Ltd.

China Triumph International Engineering Co. Ltd.

Consolidated Contractors Group

DLR Group

Dar Al Omran Rasem Badran

Dewan Architects + Engineers

Distance Studio Consultants

Dolsar Engineering

Dorsch Global GmbH

EHAF Consulting Engineers

EXP

Egis Group

Empresarios Agrupados Internacional SA

Region Country Company

Eng'g for the Petroleum & Process Industries (Enppi)

Euro Consult for Engineering Consultancy

Euro Group Eng'g Consultancy

Fichtner Group

Fluor

GEI Consultants Inc.

GHD

Gensler

Geosyntec Consultants

Ghafari Associates LLC

HDR

HKS

HOK

HSS Engineers Berhad

Haskoning

Hassan Allam Holding

Hatch Ltd.

Heerim Architects & Planners Co. Ltd.

ID&E Holdings

ILF Consulting Engineers

Ingenieria Y Economia Del Transporte SA (INECO)

Italconsult SpA

Italferr SpA

Jacobs Solutions Inc.

Jensen Hughes

KEO International Consultants

KEPCO Engineering & Construction Co. Inc.

Khatib & Alami

Kohn Pedersen Fox (KPF)

Kunhwa Engineering & Consulting Co. Ltd.

LEO A DALY

Langan

Larsen & Toubro Ltd.

Leidos

ME Engineers

MIMAR Group

Region Country Company

Maire SpA

Manens SpA

Meinhardt Group International

Moffatt & Nichol

Mott MacDonald

NV5 Global Inc.

National Engineering Services Pakistan (Pvt.) Ltd.

Nicholas O'Dwyer

Offshore Oil Engineering Co. Ltd.

Oriental Consultants Global (OCHD)

Otak Inc.

PGESCO

PROGER SpA

Pace

Parsons Corp.

Perkins Eastman

Populous Power Construction Corp. of China

RINA Consulting SpA

RSP Architects Planners & Engineers

Ramboll Group

Rebel Design+Group

SETEC

SETS

SIDARA

SLR

SSH

SYSTRA

Saman Corp.

Samoo Architects & Engineers

Samsung E&A Co. Ltd.

Sargent & Lundy

Sener Grupo de Ingeniería SA

Shaker Group

Simpson Gumpertz & Heger

Skidmore Owings & Merrill

Stanley Consultants

Stantec Inc.

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

Surbana Jurong Private Ltd.

Sweco AB

TATA Consulting Engineers Ltd.

TPF SA

Tata Projects Ltd.

Technip Energies

Tecnica y Proyectos SA (TYPSA)

Tekfen Muhendislik AS

Temelsu International Engineering Services Inc.

Tetra Tech

Thornton Tomasetti

Tractebel Engineering

Versar Global Solutions

WATG

WSP Global Inc.

Worley Ltd.

Yooshin Engineering Corp.

Yuksel Proje AS

Zutari (Pty) Ltd.

Syria

AMG Al Amar Consulting Group SA

Al-Mustashar Lil-Handasah Co. (Engicon)

CHA Consulting Inc.

Miyamoto International

Tractebel Engineering

Turkey

ACPV Architects Srl

AFRY

ARX Group (formerly Pini Group)

Archetype Group

Artelia

Arup

Assystem

Beca Group Ltd.

Black & Veatch

Region Country Company

CES Consulting Engineers

Salzgitter GmbH

CHA Consulting Inc.

COWI

CTCI Corp.

China Aluminum

International Eng'g Corp. Ltd.

China Communications

Construction Group Ltd.

China Energy Engineering Corp. Ltd.

China National Chemical Eng'g Group Corp. Ltd.

China Petroleum Engineering Co. Ltd.

China Triumph International Engineering Co. Ltd.

Coffman Engineers Inc.

DLR Group

Dolsar Engineering

Dorsch Global GmbH

Egis Group

Empresarios Agrupados Internacional SA

Ennead Architects LLP

Euro Consult for Engineering Consultancy

Fichtner Group

Fluor

Gensler

Geo-Logic Associates Inc.

Ghafari Associates LLC

HDR

HKS

HOK

Haskoning

Hassan Allam Holding

Hatch Ltd.

ID&E Holdings

ILF Consulting Engineers

IRD Engineering

Ingenieria Y Economia Del Transporte SA (INECO)

Region Country Company

Italconsult SpA

Italferr SpA

JSTI Group

Jensen Hughes

Kohn Pedersen Fox (KPF)

Maire SpA

Meinhardt Group

International

Metallurgical Corp. of China Ltd.

Miyamoto International

Moffatt & Nichol

Mott MacDonald

Oriental Consultants Global (OCHD)

Pacific Consultants Co. Ltd.

Parsons Corp.

Politecnica Ingegneria

RINA Consulting SpA

Ramboll Group

SETEC

SIDARA

SYSTRA

Samsung E&A Co. Ltd.

Stantec Inc.

Sweco AB

TATA Consulting Engineers Ltd.

TPF SA

TRC Cos. Inc.

Tecnica y Proyectos SA (TYPSA)

Tekfen Muhendislik AS

Thornton Tomasetti

Tractebel Engineering

WATG

WSP Global Inc.

Worley Ltd.

Yuksel Proje AS

United Arab Emirates

10 Design

AFRY

AJi Group

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

AMG Al Amar Consulting Group SA

ARX Group (formerly Pini Group)

AYESA

Al-Mustashar Lil-Handasah Co. (Engicon)

Arcadis NV

Archetype Group

Architecture & Planning Group

Artelia

Associated Consulting Engineers

Assystem

AtkinsRéalis

Bechtel

Beijing Urban Construction Group Co. Ltd.

Bilfinger Engineering

Black & Veatch

CDM Smith

COWI

CRB

China Aluminum International Eng'g Corp. Ltd.

China Energy Engineering Corp. Ltd.

China National Chemical Eng'g Group Corp. Ltd.

China National Machinery Industry Corp.

China Petroleum Engineering Co. Ltd.

Consolidated Contractors Group

DLR Group

Dar Al Omran Rasem Badran

Day & Zimmermann

DeSimone Consulting Engineering

Dewan Architects + Engineers

Distance Studio Consultants

Region Country Company

Dohwa Engineering Co. Ltd.

Dorsch Global GmbH

EHAF Consulting Engineers

Egis Group

Empresarios Agrupados Internacional SA

Energoprojekt Holding PLC

Eng'g for the Petroleum & Process Industries (Enppi)

Euro Consult for Engineering Consultancy

Fichtner Group

Fluor

GHD

GS Engineering & Construction

Gensler

Geosyntec Consultants

Ghafari Associates LLC

HDR

HKS

HOK

HSS Engineers Berhad

Haskoning

Hassan Allam Holding

Hatch Ltd.

ID&E Holdings

ILF Consulting Engineers

Ingenieria Y Economia Del Transporte SA (INECO)

Italconsult SpA

Jacobs Solutions Inc.

Jan De Nul Group (Sofidra SA)

Jensen Hughes

KEO International Consultants

KEPCO Engineering & Construction Co. Inc.

Khatib & Alami

Kohn Pedersen Fox (KPF)

Kunhwa Engineering & Consulting Co. Ltd.

LEO A DALY

Langan

Region Country Company

Larsen & Toubro Ltd.

ME Engineers

MIMAR Group

Maire SpA

Meinhardt Group International

Moffatt & Nichol

Mott MacDonald

NORR

NV5 Global Inc.

Oriental Consultants Global (OCHD)

PGESCO

PROGER SpA

Parsons Corp.

Perkins Eastman

Populous

Power Construction Corp. of China

RINA Consulting SpA

RSP Architects Planners & Engineers

Ramboll Group

Rebel Design+Group

SETEC

SIDARA SLR

SSH

SYSTRA

Samsung E&A Co. Ltd.

Sargent & Lundy

Sener Grupo de Ingeniería SA

Shaker Group

Simpson Gumpertz & Heger

Skidmore Owings & Merrill

Stanley Consultants

Stantec Inc.

Surbana Jurong Private Ltd.

Sweco AB

TATA Consulting Engineers Ltd.

TRC Cos. Inc.

Tata Projects Ltd.

Technip Energies

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

Tecnica y Proyectos SA (TYPSA)

Tetra Tech

Thornton Tomasetti

Tractebel Engineering

WATG

WSP Global Inc.

Woolpert

Worley Ltd.

Yuksel Proje AS

Zutari (Pty) Ltd.

Yemen

Al-Mustashar Lil-Handasah Co. (Engicon)

Associated Consulting Engineers

Dar Al Omran Rasem Badran

Euro Consult for Engineering Consultancy

Fichtner Group

ILF Consulting Engineers

National Engineering Services Pakistan (Pvt.) Ltd.

Tractebel Engineering

F. ASIA

Bangladesh

AFRY

AYESA

Archetype Group

Artelia

Assystem

AtkinsRéalis

Beca Group Ltd.

Black & Veatch

CISPDR Corporation

COWI

CTI Engineering Group

Cheil Engineering Co. Ltd. (CHEIL)

Region Country Company

China Communications

Construction Group Ltd.

China Energy Engineering Corp. Ltd.

China Railway Construction Corp. Ltd.

China Railway Design Corp.

China Railway Group Ltd.

China State Construction Engineering Corp. Ltd.

China Triumph International Engineering Co. Ltd.

Dasan Consultants Co. Ltd.

Dohwa Engineering Co. Ltd.

Dorsch Global GmbH

Egis Group

Empresarios Agrupados Internacional SA

Fichtner Group

HOK

HSS Engineers Berhad

Haskoning

ID&E Holdings

ILF Consulting Engineers

IRD Engineering

JSTI Group

Jan De Nul Group (Sofidra SA)

Jensen Hughes

Korea Engineering Consultants Corp.

Kunhwa Engineering & Consulting Co. Ltd.

Langan

Meinhardt Group International

Miyamoto International

Moffatt & Nichol

Mott MacDonald

Oriental Consultants Global (OCHD)

PADECO Co. Ltd.

Pacific Consultants Co. Ltd.

Region Country Company

People Dreams & Technologies Group Co. Ltd.

Populous

Power Construction Corp. of China

RINA Consulting SpA

Ramboll Group

SIDARA

SYSTRA

Skidmore Owings & Merrill

Stantec Inc.

Surbana Jurong Private Ltd.

Sweco AB

TATA Consulting Engineers Ltd.

TRC Cos. Inc.

Technip Energies

Tecnica y Proyectos SA (TYPSA)

Thornton Tomasetti

Tractebel Engineering

WATG

Yachiyo Engineering Co. Ltd.

Yooshin Engineering Corp.

Brunei

Artelia

CTCI Corp.

China National Chemical Eng'g Group Corp. Ltd.

Dorsch Global GmbH

Fichtner Group

Haskoning

RINA Consulting SpA

Ramboll Group

Saman Corp.

Technip Energies

Worley Ltd.

Yooshin Engineering Corp.

Cambodia

10 Design

AFRY

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

Archetype Group

Artelia

Arup

AtkinsRéalis

Beca Group Ltd.

Beijing Institute of Architectural Design

Black & Veatch

CISPDR Corporation

CTI Engineering Group

China Communications Construction Group Ltd.

China Energy Engineering Corp. Ltd.

China Railway Construction Corp. Ltd.

China Railway Group Ltd.

China State Construction Engineering Corp. Ltd.

Dasan Consultants Co. Ltd.

Dohwa Engineering Co. Ltd.

Egis Group

HSS Engineers Berhad

Haskoning

Heerim Architects & Planners Co. Ltd.

ID&E Holdings

JSTI Group

Korea Engineering Consultants Corp.

Kunhwa Engineering & Consulting Co. Ltd.

Meinhardt Group International

Metallurgical Corp. of China Ltd.

Oriental Consultants Global (OCHD)

PADECO Co. Ltd.

Pacific Consultants Co. Ltd.

Power Construction Corp. of China

RINA Consulting SpA

Ramboll Group

Region Country Company

Saman Corp.

WATG

Yooshin Engineering Corp.

China (P.R.C.)

10 Design

ACPV Architects Srl

AFRY

Arcadis NV

Archetype Group

Artelia

Arup

Assystem

AtkinsRéalis

Aurecon

Baker Engineering & Risk Consultants Inc.

Beca Group Ltd.

Beijing Urban Construction Group Co. Ltd.

Black & Veatch

CHA Consulting Inc.

CISPDR Corporation

COWI

CTCI Corp.

China Design Group Co. Ltd.

China Petroleum Engineering Co. Ltd.

China Railway Construction Corp. Ltd.

China Railway Group Ltd.

DLR Group

Day & Zimmermann

Deerns

Egis Group

Empresarios Agrupados Internacional SA

Ennead Architects LLP

Fichtner Group

Fluor

GHD

Gensler

Ghafari Associates LLC

HKS

Region Country Company

HOK

Haskoning

Hatch Ltd.

ID&E Holdings

Jacobs Solutions Inc.

Jensen Hughes

Kohn Pedersen Fox (KPF)

LEO A DALY

Langan

M3 Engineering and Technology Corp.

MG2

Maire SpA

Meinhardt Group International

Mott MacDonald

NBBJ

NV5 Global Inc.

Offshore Oil Engineering Co. Ltd.

PADECO Co. Ltd.

PCG Profabril Consulplano

Global SA

PM Group

People Dreams & Technologies Group Co. Ltd.

Perkins Eastman

Populous

RINA Consulting SpA

RSP Architects Planners & Engineers

Ramboll Group

Rebel Design+Group

SETEC

SIDARA

SYSTRA

Salas O'Brien

Samoo Architects & Engineers

Samsung E&A Co. Ltd.

Sener Grupo de Ingeniería SA

Simpson Gumpertz & Heger

Skidmore Owings & Merrill

Stantec Inc.

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

Surbana Jurong Private Ltd.

Sweco AB

TATA Consulting Engineers Ltd.

TRC Cos. Inc.

Tata Projects Ltd.

Technip Energies

Thornton Tomasetti

Tractebel Engineering

WATG

WSP Global Inc.

Ware Malcomb

Worley Ltd.

Diego Garcia

Arcadis NV

AtkinsRéalis

Aurecon

Beca Group Ltd.

Beijing Urban Construction Group Co. Ltd.

China Communications

Construction Group Ltd.

China Railway Construction Corp. Ltd.

China Railway Group Ltd.

Egis Group

Fichtner Group

Gensler

Jensen Hughes

Meinhardt Group International

Metallurgical Corp. of China Ltd.

Mott MacDonald

NV5 Global Inc.

PCG Profabril Consulplano

Global SA

Populous

Tractebel Engineering

Weston Solutions Inc.

Hong Kong (P.R.C.)

10 Design

Region Country Company

ACPV Architects Srl

AFRY

Arcadis NV

Artelia

Arup

AtkinsRéalis

Aurecon

Barr Engineering Co.

Beijing Urban Construction Group Co. Ltd.

Black & Veatch

COWI

China Communications

Construction Group Ltd.

China Design Group Co. Ltd.

China National Chemical Eng'g Group Corp. Ltd.

China Railway Construction Corp. Ltd.

China Railway Group Ltd.

Egis Group

Empresarios Agrupados Internacional SA

Fichtner Group

Gensler

HOK

Haskoning

Hatch Ltd.

Jacobs Solutions Inc.

Kohn Pedersen Fox (KPF)

Meinhardt Group International

Mott MacDonald

NBBJ

NV5 Global Inc.

Offshore Oil Engineering Co. Ltd.

Parsons Corp.

Perkins Eastman

Populous

Ramboll Group

Rebel Design+Group

SIDARA

SYSTRA

Region Country Company

Simpson Gumpertz & Heger

Skidmore Owings & Merrill

Surbana Jurong Private Ltd.

Tata Projects Ltd.

Thornton Tomasetti

Tractebel Engineering

WSP Global Inc.

India

3TI PROGETTI

AFRY

ARX Group (formerly Pini Group)

AYESA

Actalent Services

Arcadis NV

Archetype Group

Artelia

Assystem

AtkinsRéalis

Baker Engineering & Risk Consultants Inc.

Barr Engineering Co.

Beca Group Ltd.

Bechtel

Black & Veatch

CDM Smith

CHA Consulting Inc.

CISPDR Corporation

COWI

CRB

CTCI Corp.

CTI Engineering Group

China Aluminum

International Eng'g Corp. Ltd.

China Energy Engineering Corp. Ltd.

China Nerin Engineering Co. Ltd.

China Petroleum Engineering Co. Ltd.

China Railway Construction Corp. Ltd.

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

China Triumph International Engineering Co. Ltd.

Dar Al Omran Rasem Badran

DeSimone Consulting Engineering

Deerns

Dohwa Engineering Co. Ltd.

Dolsar Engineering

Dorsch Global GmbH

Egis Group

Empresarios Agrupados Internacional SA

Fichtner Group

Fluor

GS Engineering & Construction

Gensler

Ghafari Associates LLC

HDR

HKS

HOK

HSS Engineers Berhad

Haskoning

Hatch Ltd.

ID&E Holdings

ILF Consulting Engineers

INGEROP

IPS-Integrated Project Services LLC

IRD Engineering

Italferr SpA

JGC Holdings Corp.

JSTI Group

Jacobs Solutions Inc.

Jensen Hughes

KEO International Consultants

Khatib & Alami

Kohn Pedersen Fox (KPF)

Kunhwa Engineering & Consulting Co. Ltd.

Langan

Larsen & Toubro Ltd.

Lombardi Group

Region Country Company

ME Engineers

Maire SpA

Meinhardt Group

International

Metallurgical Corp. of China Ltd.

Miyamoto International

Mott MacDonald

NBBJ

NV5 Global Inc.

Oriental Consultants Global (OCHD)

PADECO Co. Ltd.

PM Group

Pacific Consultants Co. Ltd.

Perkins Eastman

Populous

Power Construction Corp. of China

RINA Consulting SpA

Ramboll Group

SIDARA

SSOE Group

SYSTRA

Salas O'Brien

Sargent & Lundy

Sener Grupo de Ingeniería SA

Skidmore Owings & Merrill

Stanley Consultants

Stantec Inc.

Surbana Jurong Private Ltd.

Sweco AB

TATA Consulting Engineers Ltd.

TRC Cos. Inc.

Tata Projects Ltd.

Technip Energies

Tecnica y Proyectos SA (TYPSA)

Thornton Tomasetti

Tractebel Engineering

WATG

WSP Global Inc.

Worley Ltd.

Region Country Company

Yooshin Engineering Corp.

Yuksel Proje AS

Indonesia

AFRY

Arcadis NV

Archetype Group

Artelia

AtkinsRéalis

Aurecon

Beca Group Ltd.

Beijing Urban Construction Group Co. Ltd.

Black & Veatch

CDM Smith

CHA Consulting Inc.

CISPDR Corporation

COWI

CTCI Corp.

CTI Engineering Group

Cheil Engineering Co. Ltd. (CHEIL)

China Aluminum

International Eng'g Corp. Ltd.

China Communications

Construction Group Ltd.

China Design Group Co. Ltd.

China Energy Engineering Corp. Ltd.

China National Chemical Eng'g Group Corp. Ltd.

China Nerin Engineering Co. Ltd.

China Petroleum Engineering Co. Ltd.

China Railway Construction Corp. Ltd.

China Railway Design Corp.

China Railway Group Ltd.

China State Construction Engineering Corp. Ltd.

Deerns

Dohwa Engineering Co. Ltd.

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

Dorsch Global GmbH

Egis Group

Empresarios Agrupados Internacional SA

Fichtner Group

Fluor

GHD

Gensler

HDR

HKS

HSS Engineers Berhad

Haskoning

Hatch Ltd.

ID&E Holdings

ILF Consulting Engineers

JGC Holdings Corp.

Jensen Hughes

Kajima Corp.

Kohn Pedersen Fox (KPF)

Korea Engineering Consultants Corp.

Kunhwa Engineering & Consulting Co. Ltd.

Maire SpA

Meinhardt Group International

Metallurgical Corp. of China Ltd.

Miyamoto International

Moffatt & Nichol

Mott MacDonald

NBBJ

NV5 Global Inc.

Nicholas O'Dwyer

Oriental Consultants Global (OCHD)

PADECO Co. Ltd.

PCG Profabril Consulplano

Global SA

Pacific Consultants Co. Ltd.

Page

People Dreams & Technologies Group Co. Ltd.

Region Country Company

Power Construction Corp. of China

RINA Consulting SpA

RSP Architects Planners & Engineers

Ramboll Group

SETEC

SIDARA

SYSTRA

Saman Corp.

Samsung E&A Co. Ltd.

Sargent & Lundy

Skidmore Owings & Merrill

Stantec Inc.

Surbana Jurong Private Ltd.

Sweco AB

TATA Consulting Engineers Ltd.

TRC Cos. Inc.

Tata Projects Ltd.

Technip Energies

Tecnica y Proyectos SA (TYPSA)

Thornton Tomasetti

Tractebel Engineering

WATG

Waldemar S. Nelson and Co. Inc.

Woolpert

Worley Ltd.

Yachiyo Engineering Co. Ltd.

Yooshin Engineering Corp.

Japan

AFRY

Arcadis NV

Archetype Group

Artelia

Arup

AtkinsRéalis

Baker Engineering & Risk Consultants Inc.

Bechtel

Black & Veatch

Region Country Company

CHA Consulting Inc.

COWI

CRB

CTI Engineering Group

Coffman Engineers Inc.

Day & Zimmermann

Dewberry

Dohwa Engineering Co. Ltd.

EXP

Empresarios Agrupados Internacional SA

Fichtner Group

Fluor

GHD

Gensler

HDR HKS

HOK

Haskoning

Hatch Ltd.

JGC Holdings Corp.

Jensen Hughes

Kajima Corp.

Kohn Pedersen Fox (KPF)

Kunhwa Engineering & Consulting Co. Ltd.

Larsen & Toubro Ltd.

M3 Engineering and Technology Corp.

ME Engineers

MG2

Meinhardt Group International

Merrick & Co.

Miyamoto International

Moffatt & Nichol

Mott MacDonald

NBBJ

NV5 Global Inc.

Oriental Consultants Global (OCHD)

Pacific Consultants Co. Ltd.

Parsons Corp.

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

People Dreams & Technologies Group Co.

Ltd.

Perkins Eastman

Populous

RINA Consulting SpA

Ramboll Group

Rebel Design+Group

SIDARA

Samoo Architects & Engineers

Sener Grupo de Ingeniería SA

Skidmore Owings & Merrill

Stanley Consultants

Sweco AB

TATA Consulting Engineers Ltd.

TRC Cos. Inc.

Tata Projects Ltd.

Thornton Tomasetti

Tractebel Engineering

WATG

Weston Solutions Inc.

Woolpert

Yachiyo Engineering Co. Ltd.

Yuksel Proje AS

Kazakhstan

AFRY

Archetype Group

Associated Consulting Engineers

Cheil Engineering Co. Ltd. (CHEIL)

China Aluminum International Eng'g Corp. Ltd.

China Communications

Construction Group Ltd.

China Energy Engineering Corp. Ltd.

China National Chemical Eng'g Group Corp. Ltd.

China Petroleum Engineering Co. Ltd.

Region Country Company

China Railway Construction Corp. Ltd.

Consolidated Contractors

Group

Day & Zimmermann

Dohwa Engineering Co. Ltd.

Dorsch Global GmbH

Egis Group

Ennead Architects LLP

Fichtner Group

Fluor

Gensler

Haskoning

Hatch Ltd.

ILF Consulting Engineers

IRD Engineering

Jan De Nul Group (Sofidra SA)

Jensen Hughes

Langan

Maire SpA

Manens SpA

Meinhardt Group

International

Mott MacDonald

PROGER SpA

Politecnica Ingegneria

Power Construction Corp. of China

RINA Consulting SpA

Ramboll Group

Sargent & Lundy

Skidmore Owings & Merrill

Surbana Jurong Private Ltd.

TRC Cos. Inc.

Temelsu International Engineering Services Inc.

Thornton Tomasetti

Tractebel Engineering

Worley Ltd.

Yooshin Engineering Corp.

Yuksel Proje AS

Korea, South AFRY

Region Country Company

Arcadis NV

Artelia

AtkinsRéalis

Baker Engineering & Risk Consultants Inc.

Black & Veatch

CHA Consulting Inc.

COWI

CRB

Cheil Engineering Co. Ltd. (CHEIL)

China Aluminum International Eng'g Corp. Ltd.

China Nerin Engineering Co. Ltd.

China State Construction Engineering Corp. Ltd.

Coffman Engineers Inc.

Day & Zimmermann

Deerns

EXP

Empresarios Agrupados Internacional SA

Fichtner Group

Fluor

Gensler

Geosyntec Consultants

HDR

HOK

Haskoning

Heerim Architects & Planners Co. Ltd.

Jacobs Solutions Inc.

Jensen Hughes

Kohn Pedersen Fox (KPF)

Kunhwa Engineering & Consulting Co. Ltd.

Langan

Maire SpA

Moffatt & Nichol

Mott MacDonald

NBBJ

Otak Inc.

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

Parsons Corp.

Populous

RINA Consulting SpA

Ramboll Group

SIDARA

STUDIOS architecture

SYSTRA

Samoo Architects & Engineers

Sargent & Lundy

Sener Grupo de Ingeniería SA

Simpson Gumpertz & Heger

Skidmore Owings & Merrill

Stanley Consultants

Stantec Inc.

Sweco AB

TATA Consulting Engineers Ltd.

TRC Cos. Inc.

Tata Projects Ltd.

Technip Energies

Thornton Tomasetti

Tractebel Engineering

WATG

WSP Global Inc.

Yooshin Engineering Corp.

Kyrgyzstan

AFRY

Artelia

CTI Engineering Group

China Communications Construction Group Ltd.

China Energy Engineering Corp. Ltd.

China Railway Construction Corp. Ltd.

China Railway Design Corp.

China Railway Group Ltd.

Dohwa Engineering Co. Ltd.

Egis Group

Fichtner Group

ID&E Holdings

ILF Consulting Engineers

IRD Engineering

Region Country Company

Oriental Consultants Global (OCHD)

PADECO Co. Ltd.

PROYAPI Engineering and Consultancy Inc.

Power Construction Corp. of China

RINA Consulting SpA

Saman Corp.

Surbana Jurong Private Ltd.

Temelsu International

Engineering Services Inc.

Tractebel Engineering

Laos

AFRY

Archetype Group

Artelia

Arup

Beijing Urban Construction Group Co. Ltd.

Black & Veatch

CISPDR Corporation

COWI

China Energy Engineering Corp. Ltd.

China Railway Construction Corp. Ltd.

China Railway Design Corp.

China Railway Group Ltd.

China State Construction Engineering Corp. Ltd.

Dasan Consultants Co. Ltd.

Dohwa Engineering Co. Ltd.

Fichtner Group

GHD

Haskoning

Hatch Ltd.

ID&E Holdings

ILF Consulting Engineers

IRD Engineering

Jensen Hughes

Korea Engineering Consultants Corp.

Region Country Company

Kunhwa Engineering & Consulting Co. Ltd.

Oriental Consultants Global (OCHD)

PADECO Co. Ltd.

Power Construction Corp. of China

Ramboll Group

Saman Corp.

Tata Projects Ltd.

Tractebel Engineering

Yooshin Engineering Corp.

Malaysia

Arcadis NV

Archetype Group

Artelia

Arup

AtkinsRéalis

Aurecon

Baker Engineering & Risk Consultants Inc.

Beca Group Ltd.

Beijing Urban Construction Group Co. Ltd.

Bilfinger Engineering

Black & Veatch

CHA Consulting Inc.

CISPDR Corporation

CTCI Corp.

China Aluminum International Eng'g Corp. Ltd.

China Communications Construction Group Ltd.

China Design Group Co. Ltd.

China Energy Engineering Corp. Ltd.

China National Chemical Eng'g Group Corp. Ltd.

China National Machinery Industry Corp.

China Petroleum Engineering Co. Ltd.

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

China Railway Construction Corp. Ltd.

China Railway Group Ltd.

China State Construction Engineering Corp. Ltd.

Dorsch Global GmbH

Egis Group

Fichtner Group

Fluor

GHD

Gensler

HKS

HOK

Haskoning

Hatch Ltd.

Heerim Architects & Planners Co. Ltd.

ID&E Holdings

ILF Consulting Engineers

JGC Holdings Corp.

Jacobs Solutions Inc.

Jensen Hughes

Kajima Corp.

Kohn Pedersen Fox (KPF)

Maire SpA

Meinhardt Group International

Mott MacDonald

NV5 Global Inc.

Oriental Consultants Global (OCHD)

People Dreams & Technologies Group Co. Ltd.

Populous

Power Construction Corp. of China

RINA Consulting SpA

RSP Architects Planners & Engineers

Ramboll Group

SIDARA

Samoo Architects & Engineers

Samsung E&A Co. Ltd.

Region Country Company

Skidmore Owings & Merrill

Stantec Inc.

Surbana Jurong Private Ltd.

TATA Consulting Engineers Ltd.

TRC Cos. Inc.

Tata Projects Ltd.

Technip Energies

Thornton Tomasetti

WSP Global Inc.

Worley Ltd.

Yachiyo Engineering Co. Ltd.

Maldives

Day & Zimmermann

HKS

Rebel Design+Group

WATG

Mongolia

AFRY

ARX Group (formerly Pini Group)

Archetype Group

Beca Group Ltd.

COWI

CTI Engineering Group

Cheil Engineering Co. Ltd. (CHEIL)

China Design Group Co. Ltd.

China Energy Engineering Corp. Ltd.

China National Chemical

Eng'g Group Corp. Ltd.

China Nerin Engineering Co. Ltd.

China Railway Construction Corp. Ltd.

China Railway Design Corp.

China State Construction Engineering Corp. Ltd.

Dohwa Engineering Co. Ltd.

Egis Group

Fichtner Group

Region Country Company

HDR

Haskoning

Hatch Ltd.

ID&E Holdings

IRD Engineering

Jensen Hughes

Langan

Miyamoto International

Oriental Consultants Global (OCHD)

PADECO Co. Ltd.

Pacific Consultants Co. Ltd.

Power Construction Corp. of China

RINA Consulting SpA

Ramboll Group

Samoo Architects & Engineers

Shenyang Yuanda Aluminum Indus. Eng'g Co. Ltd.

Stantec Inc.

Sweco AB

Thornton Tomasetti

Tractebel Engineering

Worley Ltd.

Yachiyo Engineering Co. Ltd.

Yooshin Engineering Corp.

Myanmar (Burma)

AFRY

Archetype Group

Beca Group Ltd.

Beijing Institute of Architectural Design

CISPDR Corporation

China Communications Construction Group Ltd.

China Energy Engineering Corp. Ltd.

China Railway Construction Corp. Ltd.

China State Construction Engineering Corp. Ltd.

Dohwa Engineering Co. Ltd.

Haskoning

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

ID&E Holdings

ILF Consulting Engineers

Korea Engineering Consultants Corp.

Kunhwa Engineering & Consulting Co. Ltd.

Meinhardt Group International

Offshore Oil Engineering Co. Ltd.

Oriental Consultants Global (OCHD)

PADECO Co. Ltd.

People Dreams & Technologies Group Co. Ltd.

Power Construction Corp. of China

RINA Consulting SpA

Ramboll Group

Saman Corp.

Samoo Architects & Engineers

Surbana Jurong Private Ltd.

TRC Cos. Inc.

Tractebel Engineering

Yooshin Engineering Corp.

Nepal

AFRY

ARX Group (formerly Pini Group)

Artelia

Beijing Institute of Architectural Design

CDM Smith

CISPDR Corporation

CTI Engineering Group

China Communications Construction Group Ltd.

China Railway Construction Corp. Ltd.

China State Construction Engineering Corp. Ltd.

Dohwa Engineering Co. Ltd.

Region Country Company

Dolsar Engineering

Fichtner Group

Haskoning

ID&E Holdings

IRD Engineering

JSTI Group

Jensen Hughes

Korea Engineering Consultants Corp.

Kunhwa Engineering & Consulting Co. Ltd.

Meinhardt Group International

Miyamoto International

Oriental Consultants Global (OCHD)

PADECO Co. Ltd.

Pacific Consultants Co. Ltd.

Power Construction Corp. of China

RINA Consulting SpA

Saman Corp.

Stantec Inc.

Surbana Jurong Private Ltd.

Sweco AB

TATA Consulting Engineers Ltd.

Tata Projects Ltd.

Tractebel Engineering

Yachiyo Engineering Co. Ltd.

Yooshin Engineering Corp.

Yuksel Proje AS

Philippines 10 Design

AFRY

Arcadis NV

Archetype Group

Artelia

Arup

AtkinsRéalis

Aurecon

Beca Group Ltd.

Region Country Company

Beijing Urban Construction Group Co. Ltd.

Black & Veatch

CISPDR Corporation

COWI

CTCI Corp.

CTI Engineering Group

Cheil Engineering Co. Ltd. (CHEIL)

China Communications Construction Group Ltd.

China Design Group Co. Ltd.

China Energy Engineering Corp. Ltd.

China Railway Construction Corp. Ltd.

China Railway Design Corp.

China Railway Group Ltd.

China State Construction Engineering Corp. Ltd.

Coffman Engineers Inc.

Dasan Consultants Co. Ltd.

DeSimone Consulting Engineering

Dewan Architects + Engineers

Dohwa Engineering Co. Ltd.

Dorsch Global GmbH

Egis Group

Fichtner Group

Fluor

GHD

Gensler

Ghafari Associates LLC

HSS Engineers Berhad

Hart Howerton

Haskoning

Hatch Ltd.

Heerim Architects & Planners Co. Ltd.

ID&E Holdings

ILF Consulting Engineers

Ingenieria Y Economia Del Transporte SA (INECO)

JGC Holdings Corp.

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

JSTI Group

Jacobs Solutions Inc.

Jensen Hughes

Kajima Corp.

Korea Engineering Consultants Corp.

Kunhwa Engineering & Consulting Co. Ltd.

Leidos

M3 Engineering and Technology Corp.

Maire SpA

Meinhardt Group

International

Merrick & Co.

Metallurgical Corp. of China Ltd.

Mott MacDonald

NV5 Global Inc.

Oriental Consultants Global (OCHD)

PADECO Co. Ltd.

Page

People Dreams & Technologies Group Co. Ltd.

Power Construction Corp. of China

RINA Consulting SpA

Ramboll Group

SIDARA

SYSTRA

Saman Corp.

Samsung E&A Co. Ltd.

Sargent & Lundy

Sener Grupo de Ingeniería SA

Skidmore Owings & Merrill

Stanley Consultants

Stantec Inc.

Surbana Jurong Private Ltd.

TATA Consulting Engineers Ltd.

TRC Cos. Inc.

Thornton Tomasetti

Region Country Company

Tractebel Engineering

WATG

WSP Global Inc.

Yachiyo Engineering Co. Ltd.

Yooshin Engineering Corp.

Singapore

10 Design

AFRY

Arcadis NV

Archetype Group

Artelia

AtkinsRéalis

Aurecon

Beca Group Ltd.

Black & Veatch

COWI

CRB

CTCI Corp.

China Design Group Co. Ltd.

China Petroleum Engineering Co. Ltd.

China Railway Construction Corp. Ltd.

China Railway Group Ltd.

China State Construction Engineering Corp. Ltd.

Egis Group

Fichtner Group

Fluor

GHD

Gensler

HDR

HKS

Haskoning

Hatch Ltd.

ID&E Holdings

JGC Holdings Corp.

Jacobs Solutions Inc.

Jensen Hughes

Kohn Pedersen Fox (KPF)

Meinhardt Group

International

Merrick & Co.

Region Country Company

Mott MacDonald

NBBJ

NV5 Global Inc.

PM Group

Parsons Corp.

People Dreams & Technologies Group Co. Ltd.

Perkins Eastman

Populous

RINA Consulting SpA

RSP Architects Planners & Engineers

Ramboll Group

Rebel Design+Group

SETEC

SIDARA SLR

SYSTRA

Samsung E&A Co. Ltd.

Sargent & Lundy

Skidmore Owings & Merrill

Stantec Inc.

Surbana Jurong Private Ltd.

TATA Consulting Engineers Ltd.

TRC Cos. Inc.

Tata Projects Ltd.

Technip Energies

Thornton Tomasetti

Tractebel Engineering

WSP Global Inc.

Worley Ltd.

Sri Lanka

AFRY

AtkinsRéalis

Beca Group Ltd.

Beijing Institute of Architectural Design

Beijing Urban Construction Group Co. Ltd.

CHA Consulting Inc.

CISPDR Corporation

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

COWI

CTI Engineering Group

China Communications Construction Group Ltd.

China National Chemical Eng'g Group Corp. Ltd.

China Railway Construction Corp. Ltd.

Coffman Engineers Inc.

Dorsch Global GmbH

Ennead Architects LLP

Haskoning

ID&E Holdings

JSTI Group

Jensen Hughes

Langan

Meinhardt Group International

Oriental Consultants Global (OCHD)

PADECO Co. Ltd.

People Dreams & Technologies Group Co. Ltd.

Power Construction Corp. of China

RSP Architects Planners & Engineers

SIDARA

Saman Corp.

Skidmore Owings & Merrill

Surbana Jurong Private Ltd.

TRC Cos. Inc.

Tractebel Engineering

WATG

Yachiyo Engineering Co. Ltd.

Yooshin Engineering Corp.

Taiwan (R.O.C)

ACPV Architects Srl

AFRY

Arcadis NV

Archetype Group

Artelia

Region Country Company

Bechtel

Black & Veatch

COWI

Deerns

Egis Group

Empresarios Agrupados Internacional SA

Fichtner Group

Gensler

Geosyntec Consultants

HKS

HOK

Haskoning

Hatch Ltd.

ID&E Holdings

Jacobs Solutions Inc.

Jan De Nul Group (Sofidra SA)

Jensen Hughes

Kajima Corp.

Kohn Pedersen Fox (KPF)

Merrick & Co.

Mott MacDonald

Parsons Corp.

RINA Consulting SpA

RSP Architects Planners & Engineers

Ramboll Group

SIDARA

Skidmore Owings & Merrill

Stantec Inc.

TATA Consulting Engineers Ltd.

TRC Cos. Inc.

Tata Projects Ltd.

Technip Energies

Tractebel Engineering

WATG

WSP Global Inc.

Tajikistan

AFRY

Beijing Institute of Architectural Design

Region Country Company

CES Consulting Engineers

Salzgitter GmbH

CTI Engineering Group

China Aluminum International Eng'g Corp. Ltd.

China Communications Construction Group Ltd.

China Energy Engineering Corp. Ltd.

China Railway Construction Corp. Ltd.

China State Construction Engineering Corp. Ltd.

Day & Zimmermann

Denzay Arch. and Engineering

Dohwa Engineering Co. Ltd.

Fichtner Group

Haskoning

ID&E Holdings

JSTI Group

Miyamoto International

Mott MacDonald

PADECO Co. Ltd.

Power Construction Corp. of China

RINA Consulting SpA

Ramboll Group

Surbana Jurong Private Ltd.

Tata Projects Ltd.

Temelsu International

Engineering Services Inc.

Tractebel Engineering

Thailand

AFRY

Archetype Group

Artelia

AtkinsRéalis

Aurecon

Baker Engineering & Risk Consultants Inc.

Beca Group Ltd.

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

Bechtel

Black & Veatch

CHA Consulting Inc.

CISPDR Corporation

COWI

CTCI Corp.

CTI Engineering Group

China Aluminum International Eng'g Corp. Ltd.

China Energy Engineering Corp. Ltd.

China National Chemical Eng'g Group Corp. Ltd.

China Railway Construction Corp. Ltd.

China Railway Design Corp.

China State Construction Engineering Corp. Ltd.

Day & Zimmermann

Dewan Architects + Engineers

Dohwa Engineering Co. Ltd.

Dorsch Global GmbH

Egis Group

Ennead Architects LLP

GHD

Gensler

Haskoning

Hatch Ltd.

ID&E Holdings

ILF Consulting Engineers

JGC Holdings Corp.

Jacobs Solutions Inc.

Jensen Hughes

Kajima Corp.

Kohn Pedersen Fox (KPF)

Korea Engineering Consultants Corp.

Langan

Leidos

Maire SpA

Meinhardt Group International

Region Country Company

Metallurgical Corp. of China Ltd.

Moffatt & Nichol

Mott MacDonald

NV5 Global Inc.

Oriental Consultants Global (OCHD)

PADECO Co. Ltd.

Pacific Consultants Co. Ltd.

Page

People Dreams & Technologies Group Co. Ltd.

Perkins Eastman

RINA Consulting SpA

RSP Architects Planners & Engineers

Ramboll Group

Rebel Design+Group

SIDARA

SYSTRA

Saman Corp.

Skidmore Owings & Merrill

Stantec Inc.

Sweco AB

TATA Consulting Engineers Ltd.

TRC Cos. Inc.

Tata Projects Ltd.

Thornton Tomasetti

Tractebel Engineering

WSP Global Inc.

Worley Ltd.

Yooshin Engineering Corp.

Turkmenistan

CHA Consulting Inc.

China Petroleum Engineering Co. Ltd.

Coffman Engineers Inc.

ILF Consulting Engineers

PADECO Co. Ltd.

PGESCO

RINA Consulting SpA

Region Country Company

Ramboll Group

Uzbekistan

AFRY

AJi Group

Artelia

Assystem

Black & Veatch

CISPDR Corporation

CTI Engineering Group

China Energy Engineering Corp. Ltd.

China National Machinery Industry Corp.

China Petroleum Engineering Co. Ltd.

China Railway Construction Corp. Ltd.

Dar Al Omran Rasem Badran

Dohwa Engineering Co. Ltd.

Dolsar Engineering

Fichtner Group

Haskoning

Hatch Ltd.

Heerim Architects & Planners Co. Ltd.

ILF Consulting Engineers

IRD Engineering

Italferr SpA

JSTI Group

Jensen Hughes

Korea Engineering Consultants Corp.

Kunhwa Engineering & Consulting Co. Ltd.

Meinhardt Group

International

Metallurgical Corp. of China Ltd.

Miyamoto International

Mott MacDonald

Nicholas O'Dwyer

Oriental Consultants Global (OCHD)

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

PADECO Co. Ltd.

PROYAPI Engineering and Consultancy Inc.

Pacific Consultants Co. Ltd.

Power Construction Corp. of China

Ramboll Group

SETEC

Saman Corp.

Sargent & Lundy

Surbana Jurong Private Ltd.

TATA Consulting Engineers Ltd.

Tekfen Muhendislik AS

Temelsu International Engineering Services Inc.

Tractebel Engineering

WATG

Worley Ltd.

Yachiyo Engineering Co. Ltd.

Yooshin Engineering Corp.

Vietnam

10 Design

AFRY

Arcadis NV

Archetype Group

Artelia

AtkinsRéalis

Aurecon

Beca Group Ltd.

Beijing Institute of Architectural Design

Black & Veatch

CES Consulting Engineers

Salzgitter GmbH

CISPDR Corporation

COWI

CTCI Corp.

CTI Engineering Group

Cheil Engineering Co. Ltd. (CHEIL)

China Communications Construction Group Ltd.

Region Country Company

China Energy Engineering Corp. Ltd.

China National Chemical

Eng'g Group Corp. Ltd.

China Railway Construction Corp. Ltd.

China Railway Design Corp.

China Triumph International Engineering Co. Ltd.

Dasan Consultants Co. Ltd.

Dewan Architects + Engineers

Dohwa Engineering Co. Ltd.

Dorsch Global GmbH

Egis Group

Fichtner Group

Fluor

Gannett Fleming TranSystems (GFT)

Gensler

HOK

Haskoning

Hatch Ltd.

Heerim Architects & Planners Co. Ltd.

ID&E Holdings

ILF Consulting Engineers

JGC Holdings Corp.

JSTI Group

Jensen Hughes

KEPCO Engineering & Construction Co. Inc.

Kajima Corp.

Kohn Pedersen Fox (KPF)

Korea Engineering Consultants Corp.

Kunhwa Engineering & Consulting Co. Ltd.

Langan

Maire SpA

Meinhardt Group International

Mott MacDonald

NBBJ

Nicholas O'Dwyer

Region Country Company

Oriental Consultants Global (OCHD)

PADECO Co. Ltd.

Pacific Consultants Co. Ltd.

Page

People Dreams & Technologies Group Co. Ltd.

Perkins Eastman

Power Construction Corp. of China

RSP Architects Planners & Engineers

Ramboll Group

Rebel Design+Group

SETEC

SIDARA

SYSTRA

Samoo Architects & Engineers

Samsung E&A Co. Ltd.

Sargent & Lundy

Skidmore Owings & Merrill

Stantec Inc.

Surbana Jurong Private Ltd.

Sweco AB

TRC Cos. Inc.

Tata Projects Ltd.

Technip Energies

Thornton Tomasetti

Tractebel Engineering

WATG

WSP Global Inc.

Yachiyo Engineering Co. Ltd.

Yooshin Engineering Corp.

G.AUSTRALIA/OCEANIA

Australia

AFRY

ARX Group (formerly Pini Group)

AYESA

Arcadis NV

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

Archetype Group

Artelia

Arup

AtkinsRéalis

Aurecon

Barr Engineering Co.

Beca Group Ltd.

Bechtel

Black & Veatch

CDM Smith

COWI

CRB

CTI Engineering Group

China Communications Construction Group Ltd.

China Nerin Engineering Co. Ltd.

China Petroleum Engineering Co. Ltd.

Coffman Engineers Inc.

Dewberry

Dohwa Engineering Co. Ltd.

Egis Group

Fichtner Group

Fluor

GEI Consultants Inc.

GHD

Gannett Fleming TranSystems (GFT)

Gensler

Geosyntec Consultants

Grupo ACS/Hochtief

HDR

HKS

Haskoning

Hatch Ltd.

ID&E Holdings

ILF Consulting Engineers

INGEROP

IPS-Integrated Project Services LLC

Ingenieria Y Economia Del Transporte SA (INECO)

Italferr SpA

Region Country Company

JGC Holdings Corp.

Jacobs Solutions Inc.

Jensen Hughes

KEPCO Engineering & Construction Co. Inc.

Kleinfelder Inc.

Leidos

Lombardi Group

M3 Engineering and Technology Corp.

ME Engineers

Meinhardt Group International

Metallurgical Corp. of China Ltd.

Moffatt & Nichol

Mott MacDonald

Perkins Eastman

Populous

Power Construction Corp. of China

RINA Consulting SpA

Ramboll Group

Rebel Design+Group

SIDARA

SLR

SYSTRA

Samsung E&A Co. Ltd.

Sener Grupo de Ingeniería SA

Skidmore Owings & Merrill

Stantec Inc.

Surbana Jurong Private Ltd.

TATA Consulting Engineers Ltd.

TRC Cos. Inc.

Tata Projects Ltd.

Technip Energies

Tecnica y Proyectos SA (TYPSA)

Tetra Tech

Thornton Tomasetti

Tractebel Engineering

WATG

WSP Global Inc.

Region Country Company

Woolpert

Worley Ltd.

Yooshin Engineering Corp.

Zutari (Pty) Ltd.

New Zealand

AFRY

AtkinsRéalis

Aurecon

Baker Engineering & Risk Consultants Inc.

Beca Group Ltd.

Black & Veatch

COWI

Egis Group

GHD

Gannett Fleming TranSystems (GFT)

Gensler

Geosyntec Consultants

HDR

Haskoning

Hatch Ltd.

Jacobs Solutions Inc.

Jensen Hughes

Meinhardt Group International

Merrick & Co.

Miyamoto International

Moffatt & Nichol

Mott MacDonald

Populous

RINA Consulting SpA

Ramboll Group

Rebel Design+Group

SIDARA

SLR

SYSTRA

Simpson Gumpertz & Heger

Stantec Inc.

Surbana Jurong Private Ltd.

TRC Cos. Inc.

Tetra Tech

Thornton Tomasetti

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

WSP Global Inc.

Woolpert

Worley Ltd.

Zutari (Pty) Ltd.

Pacific Islands

AFRY

Artelia

Beca Group Ltd.

Beijing Institute of Architectural Design

Burns & McDonnell

CTI Engineering Group

China Communications

Construction Group Ltd.

China Railway Construction Corp. Ltd.

China Railway Design Corp.

Dasan Consultants Co. Ltd.

Egis Group

GHD

Gensler

Geosyntec Consultants

HDR

Haskoning

ID&E Holdings

Meinhardt Group International

Merrick & Co.

Metallurgical Corp. of China Ltd.

Moffatt & Nichol

Oriental Consultants Global (OCHD)

Pacific Consultants Co. Ltd.

Parsons Corp.

Stantec Inc.

TRC Cos. Inc.

Thornton Tomasetti

Tractebel Engineering

Versar Global Solutions

WATG

Woolpert

Yachiyo Engineering Co. Ltd.

Region Country Company

Yooshin Engineering Corp.

Papua New Guinea

AFRY

Artelia

Beca Group Ltd.

CTI Engineering Group

China Communications

Construction Group Ltd.

China National Machinery

Industry Corp.

China Railway Construction Corp. Ltd.

Day & Zimmermann

Dohwa Engineering Co. Ltd.

Egis Group

Fluor

GHD

Haskoning

Hatch Ltd.

ID&E Holdings

INGEROP

JGC Holdings Corp.

Jensen Hughes

Meinhardt Group International

Metallurgical Corp. of China Ltd.

National Engineering Services Pakistan (Pvt.) Ltd.

Oriental Consultants Global (OCHD)

PADECO Co. Ltd.

Power Construction Corp. of China

RINA Consulting SpA

Stantec Inc.

Surbana Jurong Private Ltd.

Tetra Tech

Tractebel Engineering

Woolpert

Worley Ltd.

Region Country Company

Timor Leste

Miyamoto International

Thornton Tomasetti

H. NORTHAFRICA

Algeria

AFRY

AYESA

Artelia

AtkinsRéalis

Atlas Group

COWI

China Communications Construction Group Ltd.

China National Chemical Eng'g Group Corp. Ltd.

China Petroleum Engineering Co. Ltd.

China State Construction Engineering Corp. Ltd.

China Triumph International Engineering Co. Ltd.

Dohwa Engineering Co. Ltd.

Dorsch Global GmbH

EHAF Consulting Engineers

Egis Group

Energoprojekt Holding PLC

Fichtner Group

ILF Consulting Engineers

Italconsult SpA

JGC Holdings Corp.

JSTI Group

Jensen Hughes

Khatib & Alami

Korea Engineering Consultants Corp.

Maire SpA

PROGER SpA

Page

Perkins Eastman

Power Construction Corp. of China

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

RINA Consulting SpA

Ramboll Group

SETEC

SIDARA

STUDI International

Saman Corp.

Samsung E&A Co. Ltd.

Shaker Group

Sweco AB

TPF SA

Technital SpA

Temelsu International Engineering Services Inc.

Thornton Tomasetti

Tractebel Engineering

Yuksel Proje AS

Egypt

10 Design

AFRY

AJi Group

AMG Al Amar Consulting Group SA

ARX Group (formerly Pini Group)

Al-Mustashar Lil-Handasah Co. (Engicon)

Arcadis NV

Archetype Group

Architecture & Planning Group

Artelia

Associated Consulting Engineers

Assystem

AtkinsRéalis

Baker Engineering & Risk Consultants Inc.

Beijing Institute of Architectural Design

Beijing Urban Construction Group Co. Ltd.

Bilfinger Engineering

Black & Veatch

Region Country Company

CDM Smith

CES Consulting Engineers Salzgitter GmbH

COWI

CTCI Corp.

China Energy Engineering Corp. Ltd.

China National Chemical

Eng'g Group Corp. Ltd.

China Railway Group Ltd.

China Triumph International Engineering Co. Ltd.

Consolidated Contractors

Group

DBA Group SpA

DLR Group

Day & Zimmermann

Dewan Architects + Engineers

Distance Studio Consultants

Dorsch Global GmbH

EHAF Consulting Engineers

Egis Group

Empresarios Agrupados Internacional SA

Euro Group Eng'g Consultancy

GS Engineering & Construction

Gensler

Haskoning

Hassan Allam Holding

Hatch Ltd.

ID&E Holdings

ILF Consulting Engineers

INGEROP

Italferr SpA

JSTI Group

Jensen Hughes

Khatib & Alami

Korea Engineering Consultants Corp.

Langan

MIMAR Group

Maire SpA

Region Country Company

Meinhardt Group International

Moffatt & Nichol

Mott MacDonald

Oriental Consultants Global (OCHD)

PADECO Co. Ltd.

PGESCO

PROGER SpA

Page

Parsons Corp.

Perkins Eastman

Populous

Power Construction Corp. of China

RINA Consulting SpA

Ramboll Group

SETEC

SETS

SIDARA

SYSTRA

Saman Corp.

Samsung E&A Co. Ltd.

Sargent & Lundy

Sener Grupo de Ingeniería SA

Shaker Group

Simpson Gumpertz & Heger

Skidmore Owings & Merrill

Stantec Inc.

Sweco AB

TATA Consulting Engineers Ltd.

Tata Projects Ltd.

Technip Energies

Technital SpA

Thornton Tomasetti

Tractebel Engineering

WATG

Worley Ltd.

Yachiyo Engineering Co. Ltd.

Zutari (Pty) Ltd.

Ethiopia

AFRY

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

Archetype Group

Artelia

Beijing Institute of Architectural Design

Beijing Urban Construction Group Co. Ltd.

Black & Veatch

CES Consulting Engineers

Salzgitter GmbH

CISPDR Corporation

COWI

CTI Engineering Group

China Energy Engineering Corp. Ltd.

China Railway Design Corp.

Dasan Consultants Co. Ltd.

Dohwa Engineering Co. Ltd.

Dorsch Global GmbH

Gensler

Haskoning

ID&E Holdings

JSTI Group

Jensen Hughes

Khatib & Alami

Korea Engineering Consultants Corp.

Kunhwa Engineering & Consulting Co. Ltd.

Nicholas O'Dwyer

Oriental Consultants Global (OCHD)

PADECO Co. Ltd.

Politecnica Ingegneria

RINA Consulting SpA

Ramboll Group

Rebel Design+Group

SIDARA

SSH

Saman Corp.

Stantec Inc.

TATA Consulting Engineers Ltd.

Tecnica y Proyectos SA (TYPSA)

Region Country Company

Tractebel Engineering

WATG

Zutari (Pty) Ltd.

Libya

AMG Al Amar Consulting Group SA

Al-Mustashar Lil-Handasah Co. (Engicon)

Artelia

Distance Studio Consultants

Dorsch Global GmbH

Gensler

Haskoning

Hassan Allam Holding

ID&E Holdings

Kunhwa Engineering & Consulting Co. Ltd.

Moffatt & Nichol

PGESCO

PROGER SpA

SIDARA

Surbana Jurong Private Ltd.

Morocco

AMG Al Amar Consulting Group SA

AYESA

Arcadis NV

Archetype Group

Artelia

Assystem

Barr Engineering Co.

CHA Consulting Inc.

CISPDR Corporation

COWI

China Communications

Construction Group Ltd.

China Railway Design Corp.

Dohwa Engineering Co. Ltd.

Dorsch Global GmbH

Egis Group

Empresarios Agrupados Internacional SA

Region Country Company

Fichtner Group

Gensler

Haskoning

Hatch Ltd.

ID&E Holdings

ILF Consulting Engineers

INGEROP

Ingenieria Y Economia Del Transporte SA (INECO)

JSTI Group

Jacobs Solutions Inc.

Jan De Nul Group (Sofidra SA)

Jensen Hughes

Kunhwa Engineering & Consulting Co. Ltd.

Langan

M3 Engineering and Technology Corp.

Meinhardt Group International

Moffatt & Nichol

Mott MacDonald

Perkins Eastman

Populous

Power Construction Corp. of China

RINA Consulting SpA

Ramboll Group

Rebel Design+Group

SETEC

SIDARA

SSH

STUDIOS architecture

SYSTRA

Sargent & Lundy

Sener Grupo de Ingeniería SA

Shaker Group

Stanley Consultants

Stantec Inc.

TATA Consulting Engineers Ltd.

TPF SA

TRC Cos. Inc.

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

Tecnica y Proyectos SA (TYPSA)

Thornton Tomasetti

Tractebel Engineering

WATG

Worley Ltd.

Niger

AFRY

Archetype Group

Artelia

Baker Engineering & Risk Consultants Inc.

Beijing Institute of Architectural Design

Black & Veatch

CES Consulting Engineers

Salzgitter GmbH

CHA Consulting Inc.

CISPDR Corporation

COWI

China Aluminum International Eng'g Corp. Ltd.

China Communications Construction Group Ltd.

China Energy Engineering Corp. Ltd.

China National Chemical Eng'g Group Corp. Ltd.

China Petroleum Engineering Co. Ltd.

China Railway Construction Corp. Ltd.

Egis Group

Ennead Architects LLP

Fichtner Group

Gensler

HOK

Haskoning

Region Country Company

Haskoning

Hatch Ltd.

ID&E Holdings

ILF Consulting Engineers

INGEROP

Jensen Hughes

Khatib & Alami

Maire SpA

Meinhardt Group International

Mott MacDonald

Offshore Oil Engineering Co. Ltd.

Oriental Consultants Global (OCHD)

PADECO Co. Ltd.

Page

Power Construction Corp. of China

Quadrante

RINA Consulting SpA

Ramboll Group

SIDARA

STUDI International

Stantec Inc.

TATA Consulting Engineers Ltd.

TRC Cos. Inc.

Technip Energies

Tecnica y Proyectos SA (TYPSA)

Thornton Tomasetti

Tractebel Engineering

Region Country Company

Tractebel Engineering

Woolpert

Worley Ltd.

Yachiyo Engineering Co. Ltd.

Zutari (Pty) Ltd.

Somalia

CES Consulting Engineers

Salzgitter GmbH

Dar Al Omran Rasem Badran

Haskoning

STUDI International

Sub Sahara

Artelia Arup

Beijing Institute of Architectural Design

CES Consulting Engineers

Salzgitter GmbH

COWI

China State Construction Engineering Corp. Ltd.

Fichtner Group

Haskoning

ID&E Holdings

ILF Consulting Engineers

JSTI Group

Jensen Hughes

Oriental Consultants Global (OCHD)

PGESCO

STUDI International

TATA Consulting Engineers Ltd.

TPF SA

Thornton Tomasetti

Tractebel Engineering

Yachiyo Engineering Co. Ltd.

Zutari (Pty) Ltd.

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

Sudan

AMG Al Amar Consulting Group SA

CES Consulting Engineers

Salzgitter GmbH

CHA Consulting Inc.

CTI Engineering Group

China Petroleum Engineering Co. Ltd.

DLR Group

Day & Zimmermann

Fichtner Group

Haskoning

ILF Consulting Engineers

Korea Engineering Consultants Corp.

LEO A DALY

Pace

Page

Thornton Tomasetti

Tractebel Engineering

Zutari (Pty) Ltd.

Tunisia

AMG Al Amar Consulting Group SA

ARX Group (formerly Pini Group)

Archetype Group

Artelia

Beijing Institute of Architectural Design

CES Consulting Engineers

Salzgitter GmbH

China Energy Engineering Corp. Ltd.

Denzay Arch. and Engineering

Dorsch Global GmbH

Egis Group

Empresarios Agrupados Internacional SA

Fichtner Group

HOK

Region Country Company

Haskoning

ID&E Holdings

ILF Consulting Engineers

INGEROP

Italferr SpA

Jensen Hughes

Langan

Oriental Consultants Global (OCHD)

RINA Consulting SpA

Ramboll Group

SETEC

SIDARA

STUDI International

SYSTRA

Sweco AB

TPF SA

Tecnica y Proyectos SA (TYPSA)

Tractebel Engineering

WATG

Yachiyo Engineering Co. Ltd.

I. CENTRALAND

SOUTHERNAFRICA

Angola

Archetype Group

Artelia

Beijing Institute of Architectural Design

Beijing Urban Construction Group Co. Ltd.

CISPDR Corporation

COWI

China Communications

Construction Group Ltd.

China Energy Engineering Corp. Ltd.

China National Chemical

Eng'g Group Corp. Ltd.

China Railway Construction Corp. Ltd.

Region Country Company

China Railway Group Ltd.

Empresarios Agrupados Internacional SA

Fichtner Group

Haskoning

ID&E Holdings

JSTI Group

Moffatt & Nichol

PROGER SpA

Politecnica Ingegneria

Quadrante

RINA Consulting SpA

Ramboll Group

SETEC

SIDARA

Sweco AB

TPF SA

Tecnica y Proyectos SA (TYPSA)

Thornton Tomasetti

Tractebel Engineering

Yuksel Proje AS

Zutari (Pty) Ltd.

Benin

Archetype Group

Artelia

Beijing Institute of Architectural Design

COWI

China Aluminum

International Eng'g Corp. Ltd.

China Communications

Construction Group Ltd.

China Petroleum Engineering Co. Ltd.

China Railway Construction Corp. Ltd.

Dorsch Global GmbH

Egis Group

Haskoning

INGEROP

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

Meinhardt Group

International

Moffatt & Nichol

Ramboll Group

SETEC

STUDI International

TPF SA

Technital SpA

Tecnica y Proyectos SA (TYPSA)

Tractebel Engineering

Zutari (Pty) Ltd.

Botswana

Beijing Institute of Architectural Design

CHA Consulting Inc.

China Railway Construction Corp. Ltd.

China Railway Design Corp.

Fichtner Group

Fluor

Haskoning

Hatch Ltd.

ID&E Holdings

Mott MacDonald

Nicholas O'Dwyer

PADECO Co. Ltd.

Page

Ramboll Group

Stantec Inc.

TATA Consulting Engineers Ltd.

TRC Cos. Inc.

Tractebel Engineering

Zutari (Pty) Ltd.

Burkina Faso

Artelia

COWI

CTI Engineering Group

Day & Zimmermann

Fichtner Group

ID&E Holdings

Region Country Company

ILF Consulting Engineers

INGEROP

Page

Power Construction Corp. of China

RINA Consulting SpA

STUDI International

Tecnica y Proyectos SA (TYPSA)

Thornton Tomasetti

Tractebel Engineering

Weston Solutions Inc.

Burundi

Artelia

Cheil Engineering Co. Ltd. (CHEIL)

Egis Group

Fichtner Group

Haskoning

ILF Consulting Engineers

Metallurgical Corp. of China Ltd.

PADECO Co. Ltd.

RINA Consulting SpA

STUDI International

Tecnica y Proyectos SA (TYPSA)

Thornton Tomasetti

Zutari (Pty) Ltd.

Cameroon

AFRY

Archetype Group

Artelia

Beijing Institute of Architectural Design

Black & Veatch

CISPDR Corporation

CTI Engineering Group

China Communications

Construction Group Ltd.

China National Machinery Industry Corp.

Region Country Company

China Railway Construction Corp. Ltd.

China State Construction Engineering Corp. Ltd.

Dohwa Engineering Co. Ltd.

Dolsar Engineering

Egis Group

Fichtner Group

Haskoning

Hatch Ltd.

INGEROP

Jensen Hughes

Mott MacDonald

Power Construction Corp. of China

RINA Consulting SpA

Ramboll Group

SETEC SIDARA

STUDI International

TPF SA

Tecnica y Proyectos SA (TYPSA)

Tractebel Engineering

WSP Global Inc.

Waldemar S. Nelson and Co. Inc.

Yuksel Proje AS

Zutari (Pty) Ltd.

Cape Verde Islands

Artelia

China Railway Construction Corp. Ltd.

Fichtner Group

Haskoning

ID&E Holdings

Ingenieria Y Economia Del Transporte SA (INECO)

Jensen Hughes

Langan

Quadrante

SETEC

Thornton Tomasetti

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

Tractebel Engineering

WATG

Congo

Archetype Group

Artelia

Beijing Institute of Architectural Design

CISPDR Corporation

China Communications

Construction Group Ltd.

China Energy Engineering Corp. Ltd.

China Railway Construction Corp. Ltd.

Coffman Engineers Inc.

Day & Zimmermann

Dohwa Engineering Co. Ltd.

Egis Group

Haskoning

Hassan Allam Holding

ID&E Holdings

Jensen Hughes

Langan

Metallurgical Corp. of China Ltd.

Oriental Consultants Global (OCHD)

PROGER SpA

Page

Quadrante

RINA Consulting SpA

Ramboll Group

SETEC

SIDARA

STUDI International

Skidmore Owings & Merrill

Stantec Inc.

Technital SpA

Tecnica y Proyectos SA (TYPSA)

Thornton Tomasetti

WSP Global Inc.

Zutari (Pty) Ltd.

Region Country Company

D.R. Congo (Zaire)

AMG Al Amar Consulting

Group SA

Archetype Group

China Communications

Construction Group Ltd.

China Nerin Engineering Co. Ltd.

China Railway Construction Corp. Ltd.

China Railway Group Ltd.

Egis Group

Fichtner Group

Haskoning

ID&E Holdings

INGEROP

Korea Engineering Consultants Corp.

Metallurgical Corp. of China Ltd.

PGESCO

Power Construction Corp. of China

Ramboll Group

SIDARA

STUDI International

Tractebel Engineering

Zutari (Pty) Ltd.

Gabon

Archetype Group

Artelia

China Communications

Construction Group Ltd.

Egis Group

HDR

Haskoning

Hatch Ltd.

INGEROP

JSTI Group

Mott MacDonald

Quadrante

RINA Consulting SpA

Ramboll Group

Region Country Company

SETEC

STUDI International

TPF SA

Tecnica y Proyectos SA (TYPSA)

Tractebel Engineering

Zutari (Pty) Ltd.

Gambia

Artelia

AtkinsRéalis

China Communications

Construction Group Ltd.

Dasan Consultants Co. Ltd.

Haskoning

INGEROP

Korea Engineering Consultants Corp.

Moffatt & Nichol

Pace

SETEC

STUDI International

Tractebel Engineering

Ghana

Archetype Group

Artelia

Beijing Institute of Architectural Design

CES Consulting Engineers

Salzgitter GmbH

COWI

CTI Engineering Group

Cheil Engineering Co. Ltd. (CHEIL)

China Aluminum

International Eng'g Corp. Ltd.

China Communications

Construction Group Ltd.

China Energy Engineering Corp. Ltd.

China National Chemical Eng'g Group Corp. Ltd.

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

China Railway Construction Corp. Ltd.

China Railway Group Ltd.

Dasan Consultants Co. Ltd.

Day & Zimmermann

Dohwa Engineering Co. Ltd.

Fichtner Group

Haskoning

Hatch Ltd.

ILF Consulting Engineers

INGEROP

Jensen Hughes

Korea Engineering Consultants Corp.

Kunhwa Engineering & Consulting Co. Ltd.

Meinhardt Group International

Metallurgical Corp. of China Ltd.

Mott MacDonald

Oriental Consultants Global (OCHD)

PADECO Co. Ltd.

Page

Power Construction Corp. of China

Quadrante

Ramboll Group

SETEC

SIDARA

SLR

Saman Corp.

Sargent & Lundy

Surbana Jurong Private Ltd.

TRC Cos. Inc.

Tecnica y Proyectos SA (TYPSA)

Thornton Tomasetti

Tractebel Engineering

Weston Solutions Inc.

Worley Ltd.

Yachiyo Engineering Co. Ltd.

Yooshin Engineering Corp.

Region Country Company

Zutari (Pty) Ltd.

Guinea

AFRY

Artelia

AtkinsRéalis

Baker Engineering & Risk Consultants Inc.

Beijing Institute of Architectural Design

CES Consulting Engineers

Salzgitter GmbH

CISPDR Corporation

China Aluminum

International Eng'g Corp. Ltd.

China Communications Construction Group Ltd.

China Nerin Engineering Co. Ltd.

China Railway Construction Corp. Ltd.

China Railway Design Corp.

China State Construction Engineering Corp. Ltd.

Day & Zimmermann

Dorsch Global GmbH

Egis Group

Haskoning

Hatch Ltd.

Metallurgical Corp. of China Ltd.

Moffatt & Nichol

Mott MacDonald

Offshore Oil Engineering Co. Ltd.

Oriental Consultants Global (OCHD)

Power Construction Corp. of China

RINA Consulting SpA

Ramboll Group

SETEC

STUDI International

Region Country Company

TPF SA

Technip Energies

Tractebel Engineering

Yachiyo Engineering Co. Ltd.

Zutari (Pty) Ltd.

Ivory Coast

AFRY

Archetype Group

Artelia

Beijing Institute of Architectural Design

China National Machinery Industry Corp.

China Railway Construction Corp. Ltd.

Dohwa Engineering Co. Ltd.

EXP

Egis Group

Empresarios Agrupados Internacional SA

Fichtner Group

Haskoning

Hatch Ltd.

ID&E Holdings

ILF Consulting Engineers

INGEROP

Mott MacDonald

Oriental Consultants Global (OCHD)

Power Construction Corp. of China

Quadrante

RINA Consulting SpA

SETEC

SIDARA

SLR

STUDI International

TPF SA

Tractebel Engineering

Worley Ltd.

Yuksel Proje AS

Zutari (Pty) Ltd.

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

Kenya

AFRY

Archetype Group

Artelia

Beijing Institute of Architectural Design

Black & Veatch

CES Consulting Engineers

Salzgitter GmbH

CISPDR Corporation

COWI

CTI Engineering Group

Cheil Engineering Co. Ltd. (CHEIL)

China Communications Construction Group Ltd.

China Energy Engineering Corp. Ltd.

China Railway Construction Corp. Ltd.

China Railway Design Corp.

Dar Al Omran Rasem Badran

Day & Zimmermann

Dohwa Engineering Co. Ltd.

Egis Group

Ennead Architects LLP

Fichtner Group

Gensler

Haskoning

Hatch Ltd.

ID&E Holdings

INGEROP

JSTI Group

Jacobs Solutions Inc.

Jensen Hughes

Korea Engineering Consultants Corp.

Kunhwa Engineering & Consulting Co. Ltd.

Langan

Meinhardt Group

International

Mott MacDonald

Region Country Company

Oriental Consultants Global (OCHD)

PADECO Co. Ltd.

Perkins Eastman

Politecnica Ingegneria

Power Construction Corp. of China

RINA Consulting SpA

Ramboll Group

SIDARA

Saman Corp.

Samoo Architects & Engineers

Sargent & Lundy

Surbana Jurong Private Ltd.

Sweco AB

TATA Consulting Engineers Ltd.

TRC Cos. Inc.

Tekfen Muhendislik AS Thornton Tomasetti

Tractebel Engineering

WATG

Yooshin Engineering Corp.

Zutari (Pty) Ltd.

Lesotho

Artelia

CDM Smith

Day & Zimmermann

Hatch Ltd.

Nicholas O'Dwyer

Power Construction Corp. of China

RINA Consulting SpA

Stantec Inc.

Tractebel Engineering

Zutari (Pty) Ltd.

Liberia

Artelia

Beijing Institute of Architectural Design

Black & Veatch

COWI

Region Country Company

China Communications Construction Group Ltd.

China Railway Group Ltd.

Haskoning

Jacobs Solutions Inc.

Moffatt & Nichol

PADECO Co. Ltd.

SLR

Tractebel Engineering

Zutari (Pty) Ltd.

Malawi

AFRY

Artelia

Black & Veatch

CES Consulting Engineers

Salzgitter GmbH

CHA Consulting Inc.

COWI

China Railway Construction Corp. Ltd.

China Railway Design Corp.

Dasan Consultants Co. Ltd.

Dorsch Global GmbH

Fichtner Group

Haskoning

ID&E Holdings

INGEROP

Nicholas O'Dwyer

Pacific Consultants Co. Ltd.

Quadrante

RINA Consulting SpA

Surbana Jurong Private Ltd.

Tecnica y Proyectos SA (TYPSA)

Thornton Tomasetti

Tractebel Engineering

Zutari (Pty) Ltd.

Mozambique

AFRY

Archetype Group

Artelia

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

Beijing Institute of Architectural Design

CES Consulting Engineers

Salzgitter GmbH

CISPDR Corporation

COWI

China Communications Construction Group Ltd.

China Petroleum Engineering Co. Ltd.

China Railway Construction Corp. Ltd.

China State Construction Engineering Corp. Ltd.

Dohwa Engineering Co. Ltd.

Fichtner Group

Fluor

Haskoning

Hatch Ltd.

ID&E Holdings

ILF Consulting Engineers

JSTI Group

Korea Engineering Consultants Corp.

Kunhwa Engineering & Consulting Co. Ltd.

Moffatt & Nichol

Nicholas O'Dwyer

Oriental Consultants Global (OCHD)

PADECO Co. Ltd.

PROGER SpA

Pacific Consultants Co. Ltd.

Page

Quadrante

RINA Consulting SpA

Ramboll Group

SIDARA

STUDI International

Sweco AB

TATA Consulting Engineers Ltd.

TPF SA

TRC Cos. Inc.

Region Country Company

Technip Energies

Tecnica y Proyectos SA (TYPSA)

Tractebel Engineering

Yooshin Engineering Corp.

Zutari (Pty) Ltd.

Rwanda

AFRY

Artelia

Black & Veatch

CES Consulting Engineers

Salzgitter GmbH

CRB

China Railway Construction Corp. Ltd.

China Railway Group Ltd.

Dar Al Omran Rasem Badran

Egis Group

Energoprojekt Holding PLC

Fichtner Group

Gensler

Haskoning

ID&E Holdings

INGEROP

Korea Engineering Consultants Corp.

Kunhwa Engineering & Consulting Co. Ltd.

Meinhardt Group International

Nicholas O'Dwyer

Oriental Consultants Global (OCHD)

PADECO Co. Ltd.

Ramboll Group

SIDARA

STUDI International

Saman Corp.

Surbana Jurong Private Ltd.

Thornton Tomasetti

Tractebel Engineering

Weston Solutions Inc.

Yooshin Engineering Corp.

Region Country Company

Zutari (Pty) Ltd.

Senegal

AFRY

Archetype Group

Artelia

Beijing Institute of Architectural Design

Black & Veatch

CISPDR Corporation

CTI Engineering Group

China Communications Construction Group Ltd.

China National Machinery Industry Corp.

China Railway Construction Corp. Ltd.

China Railway Group Ltd.

Dohwa Engineering Co. Ltd.

Egis Group

Empresarios Agrupados Internacional SA

Fichtner Group

Haskoning

Hatch Ltd.

ID&E Holdings

ILF Consulting Engineers

INGEROP

Jacobs Solutions Inc.

Jan De Nul Group (Sofidra SA)

Jensen Hughes

Khatib & Alami

Korea Engineering Consultants Corp.

Meinhardt Group International

Mott MacDonald

Oriental Consultants Global (OCHD)

PADECO Co. Ltd.

RINA Consulting SpA

Ramboll Group

SETEC

STUDI International

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

SYSTRA

Sargent & Lundy

Stantec Inc.

TATA Consulting Engineers Ltd.

TPF SA

Tractebel Engineering

Yuksel Proje AS Zutari (Pty) Ltd.

Sierra Leone

3TI PROGETTI

AMG Al Amar Consulting Group SA

Artelia

China Communications

Construction Group Ltd.

China Railway Construction Corp. Ltd.

Dorsch Global GmbH

Haskoning

Hatch Ltd.

ID&E Holdings

Meinhardt Group

International

Metallurgical Corp. of China Ltd.

Politecnica Ingegneria

SLR

Tractebel Engineering

Zutari (Pty) Ltd.

South Africa

AFRY

Archetype Group

Black & Veatch

CDM Smith

COWI

China Communications

Construction Group Ltd.

Dorsch Global GmbH

Egis Group

Empresarios Agrupados Internacional SA

Region Country Company

Ennead Architects LLP

Fichtner Group

Fluor

GEI Consultants Inc.

GHD

Gensler

HDR

Haskoning

Hatch Ltd.

ID&E Holdings

INGEROP

Jacobs Solutions Inc.

Jensen Hughes

Kohn Pedersen Fox (KPF)

Mott MacDonald

Page

Populous

Power Construction Corp. of China

Ramboll Group

SIDARA

SLR

Sargent & Lundy

Sener Grupo de Ingeniería SA

Stantec Inc.

Surbana Jurong Private Ltd.

Sweco AB

TATA Consulting Engineers Ltd.

TRC Cos. Inc.

Tecnica y Proyectos SA (TYPSA)

Tractebel Engineering

WSP Global Inc.

Woolpert

Worley Ltd.

Zutari (Pty) Ltd.

Swaziland

Cheil Engineering Co. Ltd. (CHEIL)

INGEROP

Ramboll Group

Zutari (Pty) Ltd.

Region Country Company

Tanzania

Archetype Group

Artelia

AtkinsRéalis

Beijing Institute of Architectural Design

CDM Smith

CES Consulting Engineers

Salzgitter GmbH

CISPDR Corporation

COWI

Cheil Engineering Co. Ltd. (CHEIL)

China Communications Construction Group Ltd.

China Railway Construction Corp. Ltd.

China Railway Design Corp.

Dar Al Omran Rasem Badran

Dasan Consultants Co. Ltd.

Dohwa Engineering Co. Ltd.

Dorsch Global GmbH

Egis Group

Haskoning

Hatch Ltd.

ID&E Holdings

INGEROP

JSTI Group

Jensen Hughes

Khatib & Alami

Korea Engineering Consultants Corp.

Kunhwa Engineering & Consulting Co. Ltd.

Nicholas O'Dwyer

Oriental Consultants Global (OCHD)

PADECO Co. Ltd.

Pacific Consultants Co. Ltd.

Ramboll Group

SIDARA

SLR

STUDI International

SYSTRA

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

Saman Corp.

Sener Grupo de Ingeniería SA

Stantec Inc.

Surbana Jurong Private Ltd.

Sweco AB

TATA Consulting Engineers Ltd.

TPF SA

Tecnica y Proyectos SA (TYPSA)

Tractebel Engineering

Worley Ltd.

Yooshin Engineering Corp.

Yuksel Proje AS

Zutari (Pty) Ltd.

Uganda

AFRY

Artelia

Black & Veatch

CES Consulting Engineers

Salzgitter GmbH

CHA Consulting Inc.

CISPDR Corporation

COWI

CRB

Cheil Engineering Co. Ltd. (CHEIL)

China Communications

Construction Group Ltd.

China Energy Engineering Corp. Ltd.

China Petroleum Engineering Co. Ltd.

China Railway Construction Corp. Ltd.

China Railway Group Ltd.

Dar Al Omran Rasem Badran

Dohwa Engineering Co. Ltd.

Dolsar Engineering

Egis Group

Energoprojekt Holding PLC

Fichtner Group

Haskoning

Region Country Company

Hatch Ltd.

ID&E Holdings

ILF Consulting Engineers

INGEROP

JSTI Group

Jensen Hughes

Kunhwa Engineering & Consulting Co. Ltd.

Langan

Meinhardt Group International

Metallurgical Corp. of China Ltd.

Mott MacDonald

Nicholas O'Dwyer

Offshore Oil Engineering Co. Ltd.

Oriental Consultants Global (OCHD)

Page

Perkins Eastman

Quadrante

Ramboll Group

SETEC

SIDARA

STUDI International

Stantec Inc.

Surbana Jurong Private Ltd.

Sweco AB

TATA Consulting Engineers Ltd.

Technital SpA

Tecnica y Proyectos SA (TYPSA)

Tekfen Muhendislik AS

Thornton Tomasetti

Tractebel Engineering

Worley Ltd.

Yooshin Engineering Corp.

Zutari (Pty) Ltd.

Zambia

AFRY

Artelia

Region Country Company

CES Consulting Engineers

Salzgitter GmbH

CISPDR Corporation

COWI

CTI Engineering Group

China Energy Engineering Corp. Ltd.

China National Chemical Eng'g Group Corp. Ltd.

China Nerin Engineering Co. Ltd.

China Railway Construction Corp. Ltd.

China Railway Design Corp.

Egis Group

Fichtner Group

Fluor

Haskoning

Hatch Ltd.

ID&E Holdings

Jensen Hughes

Metallurgical Corp. of China Ltd.

Mott MacDonald

Nicholas O'Dwyer

Oriental Consultants Global (OCHD)

PADECO Co. Ltd.

Power Construction Corp. of China

Saman Corp.

Stantec Inc.

Surbana Jurong Private Ltd.

Sweco AB

TATA Consulting Engineers Ltd.

Tecnica y Proyectos SA (TYPSA)

Tractebel Engineering

Yachiyo Engineering Co. Ltd.

Zutari (Pty) Ltd.

Zimbabwe

COWI

Where the 2025 Top 225 International Design Firms Worked

Region Country Company

China Nerin Engineering Co. Ltd.

China Railway Construction Corp. Ltd.

China Railway Design Corp.

China Railway Group Ltd.

Coffman Engineers Inc.

Hatch Ltd.

Langan

PADECO Co. Ltd.

Power Construction Corp. of China

Ramboll Group

SIDARA

SLR

Sweco AB

Zutari (Pty) Ltd.

J. ANTARCTIC/ARCTIC

Antarctic/Artic COWI

Denzay Arch. and Engineering

EXP

Haskoning

M3 Engineering and Technology Corp.

Ramboll Group

Stanley Consultants

Stantec Inc.

Region Country Company