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 c25,000 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 49th edition, 2012/13).
United Nations and agencies
The UN has six principal organs:
The General Assembly (the main deliberative assembly);
The Security Council (decides certain resolutions for peace and security);
The Economic and Social Council (assists in promoting international economic and social cooperation and development);
The Secretariat (provides studies, information, and facilities needed by the UN);
The International Court of Justice (the primary judicial organ).
The United Nations Trusteeship Council (inactive)
The UN also includes various Funds, Programmes and specialized agencies:
Food and Agriculture Organization
International Labour Organization
International Civil Aviation Organization
International Maritime Organization
Joint United Nations Programme on HIV/AIDS
United Nations Capital Development Fund
United Nations International Children's Emergency Fund (UNICEF)
United Nations Development Programme
United Nations Educational, Scientific and Cultural Organization (UNESCO)
United Nations Environment Programme
United Nations Human Settlements Programme
United Nations Industrial Development Organization
United Nations Office for Disaster Risk Reduction (UNISDR)
United Nations Office on Drugs and Crime
Universal Postal Union
World Health Organization (WHO)
World Intellectual Property Organization
World Food Programme
World Meteorological Organization
World Tourism Organization
The UN maintains various offices:
United Nations Headquarters (New York City)
United Nations Office at Geneva
United Nations Office at Nairobi
United Nations Office at Vienna
The UN also includes subsidiary organs:
International Criminal Tribunal for the former Yugoslavia (ICTY)
International Criminal Tribunal for Rwanda (ICTY)
Agreement on the Conservation of Albatrosses and Petrels (ACAP)
Global Environment Facility (GEF)
Intergovernmental Panel on Climate Change (IPCC)
The International Union for Conservation of Nature (IUCN)
Partnerships in Environmental Management for the Seas of East Asia (PEMSEA)
United Nations Environment Programme (UNEP)
Asia-Pacific Fishery Commission (APFIC)
Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR)
Great Lakes Fishery Commission (GLFC)
Indian Ocean Tuna Commission (IOTC)
Inter-American Tropical Tuna Commission (IATTC)
International Commission for the Conservation of Atlantic Tunas (ICCAT)
International Pacific Halibut Commission (IPHC)
International Whaling Commission (IWC)
North-East Atlantic Fisheries Commission (NEAFC)
Northwest Atlantic Fisheries Organization (NAFO)
North Atlantic Salmon Conservation Organization (NASCO)
Pacific Salmon Commission (PSC)
Southeast Asian Fisheries Development Center (SEAFDEC)
Western and Central Pacific Fisheries Commission (WCPFC)
International Organization for Migration (IOM)
International Centre for Migration Policy Development (ICMPD)
Antarctic Treaty Secretariat (ATS)
International Hydrographic Organization
International Maritime Organization
International Seabed Authority
International Council for the Exploration of the Sea (ICES)
North Pacific Marine Science Organization (PICES)
Organization for Security and Co-operation in Europe (OSCE)
Conference on Disarmament
Organisation for the Prohibition of Chemical Weapons (OPCW)
Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO)
Wassenaar Arrangement
Nuclear Suppliers Group (NSG)
Australia Group (AG)
Missile Technology Control Regime (MTCR)
International Commission on Missing Persons (ICMP)
International Energy Agency
Energy Charter
Energy Community
United Nations Industrial Development Organization (UNIDO)
International Institute for Applied Systems Analysis (IIASA)
International Energy Forum (IEF)
International Renewable Energy Agency (IRENA)
Sustainable Energy for All (SE4ALL)
Renewable Energy and Energy Efficiency Partnership (REEEP)
European Atomic Energy Community
International Atomic Energy Agency
International Centre for Synchrotron-Light for Experimental Science Applications in the Middle East
Korean Peninsula Energy Development Organization
Nuclear Energy Agency
United Nations Atomic Energy Commission
World Association of Nuclear Operators
Financial, trade, and customs organizations
Alliance for Financial Inclusion (AFI)
African Development Bank
Asian Development Bank
Asian Infrastructure Investment Bank
Bank for International Settlements
Black Sea Trade and Development Bank (BSTDB)
Caribbean Development Bank (CDB)
Council of Europe Development Bank (CEB)
European Bank for Reconstruction and Development (EBRD)
Inter-American Development Bank
International Bureau of Weights and Measures (BIPM)
International Energy Agency (IEA)
International Fund for Agricultural Development (IFAD)
International Development Law Organization (IDLO), headquartered in Rome
International Monetary Fund (IMF)
Islamic Development Bank (IDB)
Netherlands Development Finance Company (FMO)
Nordic Development Fund (NDF)
Nordic Investment Bank (NIB)
New Development Bank (NDB)
OPEC Fund for International Development (OPEC Fund)
Organisation for Economic Co-operation and Development (OECD)
Organization of Petroleum-Exporting Countries (OPEC)
West African Development Bank (BOAD)
World Bank Group
International Bank for Reconstruction and Development (IBRD)
International Development Association (IDA)
International Finance Corporation (IFC)
Multilateral Investment Guarantee Agency (MIGA)
International Centre for Settlement of Investment Disputes (ICSID)
World Customs Organization (WCO)
World Trade Organization (WTO)
International Criminal Court (ICC)
International Criminal Police Organization (Interpol)
European Union (EU)
Western European Union (defunct)
Council of Europe (CoE)
Energy Community
European Free Trade Association (EFTA)
European Patent Organisation (EPO)
European Science Foundation
European Organisation for the Safety of Air Navigation (EUROCONTROL)
Group of 9 (G9)
International Commission on Civil Status (ICCS)
Central Commission for Navigation on the Rhine (CCNR)
Council of the Baltic Sea States (CBSS)
Baltic Black Sea Union (BBSU)
Assembly of European Regions (AER)
Eiroforum
CERN
European Fusion Development Agreement (EFDA JET)
European Molecular Biology Laboratory (EMBL)
European Space Agency (ESA)
European Organisation for the Exploitation of Meteorological Satellites (EUMETSAT)
European Southern Observatory (ESO)
European Synchrotron Radiation Facility (ESRF)
European x-ray free electron laser (European XFEL)
Institut Laue–Langevin (ILL)
Baltic Marine Environment Protection Commission
Benelux
Belgium–Luxembourg Economic Union
British–Irish Council
Nordic Council
Nordic Investment Bank
Northern Dimension Partnership in Public Health and Social Well-being (NDPHS)
Organisation for Joint Armament Cooperation(OCCAR)
Agency for International Trade Information and Cooperation (AITIC)
Visegrád Group (V4)
EUREKA
European Cooperation in Science and Technology (COST)
Community for Democracy and Rights of Nations (Commonwealth of Unrecognized States)
European Centre for Medium-range Weather Forecasts (ECMWF)
West Nordic Council
Asia Cooperation Dialogue (ACD)
Asian Development Bank (ADB)
East Asia Summit (EAS)
Association of Southeast Asian Nations (ASEAN)
Bay of Bengal Initiative for Multi-Sectoral Technical and Economic Cooperation (BIMSTEC)
Colombo Plan
Mekong–Ganga Cooperation (MGC)
Mekong River Commission (MRC)
Partnerships in Environmental Management for the Seas of East Asia (PEMSEA)
South Asian Association for Regional Cooperation (SAARC)
Southeast Asian Ministers of Education Organization (SEAMEO)
Trilateral Cooperation Secretariat (TCS)
Gulf Cooperation Council (GCC)
Eurasia
Asia-Europe Foundation (ASEF)
Central Asian Cooperation Organization
Collective Security Treaty Organization (CSTO)
Commonwealth of Independent States (CIS)
Economic Cooperation Organization (ECO)
Eurasian Economic Union (EEU or EAEU)
GUAM Organization for Democracy and Economic Development
Organization of the Black Sea Economic Cooperation (BSEC)
Shanghai Cooperation Organisation (SCO)
TRACECA
Turkic Council (TurkKon)
Trans-Atlantic
North Atlantic Treaty Organization (NATO)
Organization for Security and Co-operation in Europe (OSCE)
South Atlantic Peace and Cooperation Zone (ZPCAS)
Mediterranean
Union for the Mediterranean
Indian Ocean
Indian Ocean Rim Association for Regional Cooperation (IOR-ARC)
Indian Ocean Commission (COI)
Arctic Ocean
Arctic Council
Pacific Ocean:
ANZUS
Asia-Pacific Economic Cooperation (APEC)
Melanesian Spearhead Group (MSG)
Pacific Islands Forum
Pacific Regional Environment Programme (SPREP)
Secretariat of the Pacific Community
African, Caribbean and Pacific Group of States
Technical Centre for Agricultural and Rural Cooperation ACP-EU (CTA)
African Union
Conseil de l'Entente
Economic Community of West African States (ECOWAS)
East African Community (EAC)
West African Economic and Monetary Union (UEMOA)
Southern African Development Community (SADC)
Intergovernmental Authority on Development (IGAD)
Arab Maghreb Union
Regional Center on Small Arms in the Great Lakes Region, Horn of Africa and Bordering States (RECSA)
Organization of American States (OAS)
Union of South American Nations (USAN)
Mercosur
Andean Community of Nations
Justice Studies Center of the Americas (JSCA)
Caribbean Community (CARICOM)
Association of Caribbean States (ACS)
Organisation of Eastern Caribbean States (OECS)
Central American Parliament
Bolivarian Alliance for the Americas (ALBA)
Rio Group
System of Cooperation Among the American Air Forces (SICOFAA)
Central American Bank for Economic Integration(CABEI)
Central American Integration System
Organización Latinoamericana de Energia (OLADE)
Educational organizations and universities
Academy of European Law (ERA)
Cerlalc
Commonwealth of Learning (COL)
EUCLID (university)
European University Institute
International Bureau of Education IBE, now a part of UNESCO
International Institute for the Unification of Private Law
United Nations University
Digital 5 (D5)
Cultural, ethnic, linguistic, and religious organizations
Commonwealth of Nations
International Centre for the Study of the Preservation and Restoration of Cultural Property (ICCROM)
Organisation internationale de la Francophonie
Community of Portuguese Language Countries (CPLP)
Organization of Ibero-American States (OEI)
Arab League
Organisation of Islamic Cooperation
International Organization of Turkic Culture (TÜRKSOY)
Ideological and political groupings
NATO
Non-Aligned Movement
Group of 15 (G-15)
Group of 77 (G-77)
Group of 24 (G24)
Alliance of Small Island States (AOSIS)
Bolivarian Alliance for the Americas (ALBA)
New Agenda Coalition
Non-Proliferation and Disarmament Initiative
Western European and Others Group
(disbanded)
Advisory Centre on World Trade Organization Law
Intergovernmental Organisation for International Carriage by Rail (OTIF)
International Institute for Democracy and Electoral Assistance (International IDEA)
International Union of Railways (UIC)
Organization for Cooperation of Railways (OSJD or OSShD)
Partners in Population and Development
World Organisation for Animal Health
Allied Control Council
Arab Cooperation Council
Central Treaty Organization
Comecon
Council of Ambassadors
Customs and Economic Union of Central Africa
Eurasian Economic Community (transformed into Eurasian Economic Union)
French Community
French Union
G33
International Authority for the Ruhr
International Trade Organization
Latin League
Latin Union
League of Corinth
League of Nations
Organisation of African Unity
Southeast Asia Treaty Organization
Union of African States
