Comprised of 34 advanced country members, the Organisation for Economic Co-operation and Devel-opment (OECD) is a prominent advisor to the Group of 20 (G20) with regard to a range of policy areas, including infrastructure investment. The G20 views large-scale investment in infrastructure (e.g., energy, transportation, water) as key to boosting global growth and advancing job creation and devel-opment. This report examines OECD “core documents” to assess whether the organisation’s advice promotes coherence among economic, social and environmental policies as they relate to infrastructure investment. The report concludes that OECD policy advice on infrastructure investment lacks coherence for sustainable development from multiple perspectives, and in particular, coherence with global goals and countries’ aspirations. The overall thrust of its infrastructure policy advice to the G20 is insufficient to provide the G20 countries with a reliable roadmap to achieve sustainable development and