The compendium serves as a public resource capturing, in a single place, the history of institutional and programmatic gender mainstreaming efforts in health spanning five United Nations agencies, namely UNAIDS, UNDP, UNFPA, UNICEF, WHO.An overview of the history of gender mainstreaming efforts in health within selected agencies to be used for further analyses, to build institutional memory, and provide a deeper understanding of historical and contextual factors that affect and shape gender mainstreaming in organisational settings. Read about each agency’s organisational context, a historical account of its gender strategies and policies, and its current status regarding gender parity, gender architecture, resource allocation and accountability mechanisms.