Complementary pathways are mobility options that are additional to the traditional solutions for people living in refugee or refugee-like circumstances, such as voluntary repatriation, resettlement in another country, or integration into a host community. International interest in complementary pathways has grown in the last decade, given the need for new solutions to respond to the increasing displacement of people around the world. This knowledge brief outlines the evidence base on sponsorship in the context of complementary pathways and identifies gaps and research directions that can advance the development of global, accessible, scalable, and community-supported complementary pathways, such as family reunification and humanitarian admission pathways. Three types of pathways are covered in this brief: pathways for named sponsorship, students, and workers.