In 2018 and 2020, the World Bank published two reports on Behavioral Science Around the World that profiled the efforts of selected countries (Afif et al. 2019) and international organizations (Manning et al. 2020) to apply behavioral approaches to public policy. This third report, a joint effort of the World Bank and the World Health Organization (WHO), examines behavioral science as applied to the field of public health. The COVID-19 pandemic has revealed the need for public health d