Amid a rapidly changing climate and unprecedented numbers of climate-induced displacement, this applied research project was commissioned by the OECD Development Centre to identify whether policies on climate change mitigation influence internal migration, as research on the nexus remains scarce. The main findings derived from country-specific case studies were used to formulate policy recommendations, which should inform upcoming discussions at the 28th Conference of the Parties and 2022-2023 Global Forum on Migration and Development.