List of intergovernmental organizations

The following is a list of the major existing intergovernmental organizations (IGOs). For a more complete listing, see the Yearbook of International Organizations, which includes 25,000 international non-governmental organizations (INGOs), excluding for-profit enterprises, about 5,000 IGOs, and lists dormant and dead organizations as well as those in operation (figures as of the 400th edition, 2012/13).

Source: Wikipedia — List of intergovernmental organizations (CC BY-SA 4.0)