International Organisations
- Academy of European Law (ERA)
- African Development Bank
- African Union
- Agency for International Trade Information and Cooperation (AITIC)
- Agreement on the Conservation of Albatrosses and Petrels (ACAP)
- Alliance for Financial Inclusion (AFI)
- Alliance of Small Island States (AOSIS)
- Andean Community of Nations
- Antarctic Treaty Secretariat (ATS)
- ANZUS
- Arab League
- Arab Maghreb Union
- Arctic Council
- Arctic Ocean
- Arms control
- Asia Cooperation Dialogue (ACD)
- Asia Pacific Economic Cooperation (APEC)
- Asia-Europe Foundation (ASEF)
- Asian Development Bank (ADB)
- Asian Infrastructure Investment Bank
- Asian Institute of Technology (AIT)
- Asian–African Legal Consultative Organization AALCO
- Asia-Pacific Economic Cooperation (APEC)
- Asia-Pacific Fishery Commission (APFIC)
- Asia-Pacific Network Information Centre APNIC
- Assembly of European Regions (AER)
- Association of Caribbean States (ACS)
- Association of Southeast Asian Nations (ASEAN)
- Association of World Election Bodies (AWEB)
- Australia Group (AG)
- Baltic Black Sea Union (BBSU)
- Baltic Marine Environment Protection Commission
- Bank for International Settlements
- Basel Convention
- Bay of Bengal Initiative for Multi-Sectoral Technical and Economic Cooperation (BIMSTEC)
- Belgium–Luxembourg Economic Union
- Benelux
- Bioversity International (International Plant Genetics Resources Institute, IPGRI)
- Black Sea Trade and Development Bank (BSTDB)
- Bolivarian Alliance for the Americas (ALBA)
- BRICS (Brazil, Russia, India, China, South Africa)
- British–Irish Council
- Caribbean Community (CARICOM)
- Caribbean Development Bank (CDB)
- Center for International Forestry Research (CIFOR)
- Central American Bank for Economic Integration(CABEI)
- Central American Integration System
- Central American Parliament
- Central Commission for Navigation on the Rhine (CCNR)
- Central Commission for the navigation of the Rhine
- Central European Initiative (CEI)
- Centre for Environment and Development for the Arab Region and Europe (Cedare)
- Cerlalc
- CERN
- Collective Security Treaty Organization (CSTO)
- Colombo Plan
- Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR)
- Commonwealth of Independent States (CIS)
- Commonwealth of Learning (COL)
- Commonwealth of Nations
- Community for Democracy and Rights of Nations
- Community for Democracy and Rights of Nations (Commonwealth of Unrecognized States)
- Community of Latin American and Caribbean States (CELAC)
- Community of Portuguese Language Countries (CPLP)
- Conference on Disarmament
- Conseil de l'Entente
- Convention on Biological Diversity
- Council of Europe (CoE)
- Council of Europe Development Bank (CEB)
- Council of the Baltic Sea States (CBSS)
- East African Community (EAC)
- East Asia Summit (EAS)
- Economic Community of West African States (ECOWAS)
- Economic Cooperation Organization (ECO)
- Eiroforum
- Energy Charter
- EUCLID (university)
- Eurasian Development Bank
- Eurasian Economic Union (EEU or EAEU)
- EUREKA
- Eurofish
- European Atomic Energy Community
- European Bank for Reconstruction and Development (EBRD)
- European Centre for Medium-range Weather Forecasts (ECMWF)
- European Cooperation in Science and Technology (COST)
- European Free Trade Association (EFTA)
- European Fusion Development Agreement (EFDA JET)
- European Molecular Biology Laboratory (EMBL)
- European Organisation for the Exploitation of Meteorological Satellites (EUMETSAT)
- European Organisation for the Safety of Air Navigation (EUROCONTROL)
- European Patent Organisation (EPO)
- European Science Foundation
- European Southern Observatory (ESO)
- European Space Agency (ESA)
- European Synchrotron Radiation Facility (ESRF)
- European Union (EU)
- European University Institute
- European x-ray free electron laser (European XFEL)
- Federation of Euro-Asian Stock Exchanges
- Financial Action Task Force (FATF)
- Food and Agriculture Organization (FAO)
- G20
- Global Environment Facility (GEF)
- Great Lakes Fishery Commission (GLFC)
- Group of 15 (G-15)
- Group of 24 (G24)
- Group of 77 (G-77)
- Group of 9 (G9)
- Group of Five
- Group of Seven
- Group of Ten (economics)
- GUAM Organization for Democracy and Economic Development
- Gulf Cooperation Council (GCC)
- Indian Ocean Commission (COI)
- Indian Ocean Rim Association for Regional Cooperation (IOR-ARC)
- Indian Ocean Tuna Commission (IOTC)
- Institut Laue–Langevin (ILL)
- Inter-American Development Bank
- Inter-American Tropical Tuna Commission (IATTC)
- Intergovernmental Authority on Development (IGAD)
- Intergovernmental Organisation for International Carriage by Rail (OTIF)
- Intergovernmental Panel on Climate Change (IPCC)
- International Atomic Energy Agency
- International Bank for Reconstruction and Development (IBRD)
- International Bureau of Education IBE, now a part of UNESCO
- International Bureau of Weights and Measures (BIPM)
- International Center for Agricultural Research in the Dry Areas (ICARDA)
- International Center for Tropical Agriculture (CIAT)
- International Centre for Migration Policy Development (ICMPD)
- International Centre for Settlement of Investment Disputes (ICSID)
- International Centre for Synchrotron-Light for Experimental Science Applications in the Middle East
- International Centre for the Study of the Preservation and Restoration of Cultural Property (ICCROM)
- International Civil Aviation Organization (ICAO)
- International Commission for the Conservation of Atlantic Tunas (ICCAT)
- International Commission on Civil Status (ICCS)
- International Commission on Missing Persons (ICMP)
- International Cospas-Sarsat Programme
- International Council for the Exploration of the Sea (ICES)
- International Criminal Court (ICC)
- International Criminal Police Organization (Interpol)
- International Criminal Tribunal for Rwanda (ICTR)
- International Criminal Tribunal for the former Yugoslavia (ICTY)
- International Crops Research Institute for the Semi-Arid Tropics (ICRISAT)
- International Development Association (IDA)
- International Development Law Organization (IDLO), headquartered in Rome
- International Energy Agency (IEA)
- International Energy Forum (IEF)
- International Finance Corporation (IFC)
- International Food Policy Research Institute (IFPRI)
- International Fund for Agricultural Development (IFAD)
- International Human Rights Commission (IHRC Umbrella Fund)
- International Human Rights Commission (IHRC)
- International Hydrographic Organization
- International Institute for Applied Systems Analysis (IIASA)
- International Institute for the Unification of Private Law
- International Institute of Tropical Agriculture (IITA)
- International Labour Organization (ILO)
- International Livestock Research Institute (ILRI)
- International Maize and Wheat Improvement Center (CIMMYT)
- International Maritime Organization (IMO)
- International Monetary Fund (IMF)
- International Network for Bamboo and Rattan (INBAR)
- International Organization for Migration (IOM)
- International Pacific Halibut Commission (IPHC)
- International Potato Center (CIP)
- International Renewable Energy Agency (IRENA)
- International Rice Research Institute (IRRI)
- International Seabed Authority
- International Solar Alliance
- International Telecommunication Union (ITU)
- International Transport Forum
- International Water Management Institute (IWMI)
- International Whaling Commission (IWC)
- Interparliamentary Assembly on Orthodoxy
- Islamic Development Bank (IDB)
- Joint United Nations Programme on HIV/AIDS
- Justice Studies Center of the Americas (JSCA)
- Korean Peninsula Energy Development Organization
- Mekong River Commission (MRC)
- Mekong–Ganga Cooperation (MGC)
- Melanesian Spearhead Group (MSG)
- Mercosur
- Missile Technology Control Regime (MTCR)
- Model United Nations (MUN)
- Multilateral Investment Guarantee Agency (MIGA)
- Netherlands Development Finance Company (FMO)
- Network of Aquaculture Centres in Asia Pacific (NACA)
- New Agenda Coalition
- New Development Bank (NDB)
- Non-Aligned Movement
- Non-Proliferation and Disarmament Initiative
- Nordic Council
- Nordic Development Fund (NDF)
- Nordic Investment Bank (NIB)
- North Atlantic Salmon Conservation Organization (NASCO)
- North Atlantic Treaty Organization (NATO)
- North Pacific Marine Science Organization (PICES)
- North-East Atlantic Fisheries Commission (NEAFC)
- Northern Dimension Partnership in Public Health and Social Well-being (NDPHS)
- Northwest Atlantic Fisheries Organization (NAFO)
- Nuclear Energy Agency
- Nuclear Suppliers Group (NSG)
- OPEC Fund for International Development (OPEC Fund)
- Organisation for Joint Armament Cooperation(OCCAR)
- Organisation for the Prohibition of Chemical Weapons (OPCW)
- Organisation of Eastern Caribbean States (OECS)
- Organisation of Islamic Cooperation
- Organización Latinoamericana de Energía (OLADE)
- Organization for Cooperation of Railways (OSJD or OSShD)
- Organization for Economic and Co-operation Development (OECD)
- Organization for Security and Co-operation in Europe (OSCE)
- Organization of American States (OAS)
- Organization of Ibero-American States (OEI)
- Organization of Petroleum-Exporting Countries (OPEC)
- Organization of the Black Sea Economic Cooperation (BSEC)
- Pacific Islands Forum
- Pacific Regional Environment Programme (SPREP)
- Pacific Salmon Commission (PSC)
- Partnerships in Environmental Management for the Seas of East Asia (PEMSEA)
- Permanent Court of Arbitration (PCA)
- Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO)
- Regional Center on Small Arms in the Great Lakes Region, Horn of Africa and Bordering States (RECSA)
- Renewable Energy and Energy Efficiency Partnership (REEEP)
- Rio Group
- Secretariat of the Pacific Community
- Shanghai Cooperation Organisation (SCO)
- South Asian Association for Regional Cooperation (SAARC)
- South Atlantic Peace and Cooperation Zone (ZPCAS)
- Southeast Asian Fisheries Development Center (SEAFDEC)
- Southeast Asian Ministers of Education Organization (SEAMEO)
- Southern African Development Community (SADC)
- Sustainable Energy for All (SE4ALL)
- System of Cooperation Among the American Air Forces (SICOFAA)
- Technical Centre for Agricultural and Rural Cooperation ACP-EU (CTA)
- The Forum of Ministers of Environment of Latin America and the Caribbean
- The International Court of Justice (ICJ)
- The International Union for Conservation of Nature (IUCN)
- TRACECA
- Trilateral Cooperation Secretariat (TCS)
- Union for the Mediterranean
- Union of South American Nations (USAN)
- United Nations Atomic Energy Commission
- United Nations Capital Development Fund (UNCDF)
- United Nations Development Programme (UNDP)
- United Nations Educational, Scientific and Cultural Organization (UNESCO)
- United Nations Environment Programme (UNEP)
- United Nations Human Rights Council (UNHRC)
- United Nations Human Settlements Programme
- United Nations Industrial Development Organization (UNIDO)
- United Nations International Children's Emergency Fund (UNICEF)
- United Nations Office for Disaster Risk Reduction (UNISDR)
- United Nations Office on Drugs and Crime
- United Nations University (UNU)
- United Nations: The Economic and Social Council
- United Nations: The General Assembly
- United Nations: The Security Council
- Universal Postal Union
- Visegrád Group (V4)
- Wassenaar Arrangement
- West African Development Bank (BOAD)
- West African Economic and Monetary Union (UEMOA)
- West Nordic Council
- Western and Central Pacific Fisheries Commission (WCPFC)
- Western European Union (defunct)
- World Agroforestry Centre (International Centre for Research in Agroforestry, ICRAF)
- World Association of Nuclear Operators
- World Bank Group
- World Customs Organization (WCO)
- World Food Programme
- World Health Organization (WHO)
- World Intellectual Property Organization
- World Meteorological Organization
- World Tourism Organization
- World Trade Organization (WTO)
- World Vegetable Center
- WorldFish Center (International Center for Living Aquatic Resources Management, ICLARM)
- Zicosur