Climate change and forced migration are two major global health concerns. They are closely related, with climate change causing an increasing number of forced migrants. Natural disasters, sea-level rising or land aridification are examples of consequences of climate change that have an impact on forced migration. Moreover, the health of forced migrants can be directly affected by climate change, during the migration process or in the host country. The absence of a legal status of « climate refugee » can be an important barrier of access to health care. These vulnerable populations are among the first to be affected, which is an important health equity issue.