The chapter provides an overview of the ways gender has become an issue in international institutions and the ways it now operates in international governance. We first explore the history of efforts to get gender on the agenda of international institutions, together with the critique of such efforts. Second, we describe strategies geared towards changing gender relations in international institutions, in particular legal strategies and gender mainstreaming, and we discuss the controversies around these strategies. Finally, we reflect on the tangible and measurable impact of international feminist strategies on gender relations around the world.