A wide range of institutions have an active interest and a role to play in a variety of areas related to international migration. These range from UN agencies, international and regional intergovernmental organizations (IGOs) with formal membership arrangements, to informal international and regional forums (notably the regional consultative processes) dealing with migration. These institutions and processes play an important role in addressing the increasingly urgent and complex issues of managing international migration. The purpose of this document is to provide a schematic overview of the major existing institutions with an ongoing focus on migration-related issues and activities.