Recently, the United Nations Secretary-General, António Guterres, presented a technical note on behavioral science (United Nations, 2021) and its application by different UN organizations, in order to achieve the 2030 Sustainable Development Goals. Other supranational organizations are also setting up their own «behavioral analysis and design units» or leading specific initiatives. So far, the structure of such behavioral analysis units has not been examined. The aim of our work is to find out, through an observational study of their websites, both the structure and composition of the behavior design and analysis units of supranational organizations, as well as the main types of projects they carry out and the opportunities and implications created for psychology professionals. [ABSTRACT FROM AUTHOR]