Intergovernmental organizations

African Union

53 member countries

Arab League

22 member countries

Association of Southeast Asian Nations

11 member countries

Caribbean Community (CARICOM)

15 member countries

Central American Integration System

8 member countries

Collective Security Treaty Organization

8 member countries

Commonwealth of Independent States (CIS)

12 member countries

Commonwealth of Nations

54 member countries

East African Community

6 member countries

Eurasian Economic Union

5 member countries

European Union

27 member countries

Gulf Cooperation Council (GCC)

6 member countries

NATO

30 member countries

Nordic Council

8 member countries

OPEC

13 member countries

Organisation internationale de la Francophonie

54 member countries

Organisation of Islamic Cooperation

57 member countries

Organization of American States (OAS)

35 member countries

Pacific Community

26 member countries

Southern African Development Community (SADC)

16 member countries

Turkic Council

5 member countries

Union of South American Nations

12 member countries

United Nations

191 member countries