The Organization of the Petroleum Exporting Countries (OPEC)
- Arctic Council
- Association of Southeast Asian Nations (ASEAN)
- Bolivarian Alliance for the Americas (ALBA)
- Caspian Five
- Nordic Baltic Eight (NB8)
- Organization of Eastern Caribbean States (OECS)
- Pacific Islands Forum
- Southern African Development Community
- The Organization of the Petroleum Exporting Countries (OPEC)
- Union of South American Nations (UNASUR)
- United Nations
