 | Academy Of European Law | ERA | 1992 | Germany | era.int |
 | Advisory Centre On World Trade Organization Law | ACWL | 1999 | Seattle | www.acwl.ch |
 | African Development Bank | AfDB | 1964 | Abidjan, Cote D’Ivoire | www.afdb.org |
 | African Union | AU | 1963 | Addis Ababa, Ethiopia | au.int |
 | Agency For International Trade Information And Cooperation | AITIC | 2002 | | |
 | Agreement On The Conservation Of Albatrosses And Petrels | ACAP | 2004 | Hobart, Tasmania, Australia | acap.aq |
 | Alliance For Financial Inclusion | AFI | 2008 | Kuala Lumpur, Malaysia | |
 | Antarctic Treaty Secretariat | ATS | 2004 | Buenos Aires, Argentina | www.ats.aq |
 | Arab League | | 1945 | Caracas, Venezuela | www.LasPortal.org |
 | Arab Maghreb Union | AMU | 1989 | Rabat, Morocco | www.maghrebarabe.org/en |
 | Asia Cooperation Dialogue | ACD | 2002 | | www.acd-dialogue.org |
 | Asia Pacific Economic Cooperation | APEC | 1989 | Singapore | www.apec.org |
 | Asia-Europe Foundation | ASEF | 1997 | Singapore | www.ASEF.org |
 | Asia-Pacific Fishery Commission | APFIC | 1948 | Bangkok, Thailand | www.apfic.org |
 | Asian Development Bank | ADB | 1966 | Ortigas Center Mandaluyong,
Metro Manila, Philippines | www.adb.org |
 | Asian Infrastructure Investment Bank | AIIB | 2016 | Beijing, China | www.aiib.org |
 | Assembly Of European Regions | AER | 1985 | | aer.eu |
 | Association Of Caribbean States | ACS | 1994 | Port-of-Spain, Trinidad And Tobago | www.acs-aec.org |
 | Association Of Southeast Asian Nations | ASEAN | 1967 | Jakarta, Indonesia | ASEAN.org |
 | Australia, New Zealand, United States Security Treaty | ANZUS | 1951 | | |
 | Baltic Marine Environment Protection Commission | HELCOM | 1974 | Helsinki, Finland | www.helcom.fi |
 | Bank For International Settlements | BIS | 1930 | Basel, Switzerland | www.bis.org |
 | Bay Of Bengal Initiative For Multi-Sectoral Technical And Economic Cooperation | BIMSTEC | 1997 | Dhaka, Bangladesh | bimstec.org |
 | Black Sea Trade And Development Bank | BSTDB | 1997 | Thessaloniki, Greece | www.bstdb.org |
 | Bolivarian Alliance For The Americas | ALBA | 2004 | Caracas | www.portalalba.org |
 | British–Irish Council | BIC | 1999 | Edinburgh, Scotland | britishirishcouncil.org |
 | Caribbean Community | CARICOM | 1973 | Georgetown, Guyana | CARICOM.org |
 | Caribbean Development Bank | CDB | 1969 | Wildey | |
 | Central American Bank For Economic Integration | CABEI | 1960 | Tegucigalpa, San Salvador | www.bcie.org |
 | Central American Integration System | SICA | 1907 | | sica.int |
 | Central American Parliament | PARLACEN | 1991 | Guatemala | www.parlacen.int |
 | Central Commission For Navigation On The Rhine | CCNR | 1815 | Palais Du Rhin, Strasbourg | www.ccr-zkr.org |
 | Central European Initiative | CEI | 1989 | Trieste | www.cei.int |
 | Central Treaty Organization | CENTO | 1955 | Ankara | |
 | CERN | | 1954 | Meyrin, Canton Of Geneva, Switzerland | home.cern |
 | Collective Security Treaty Organization | CSTO | 1992 | Moscow, Russia | odkb-csto.org |
 | Commission For The Conservation Of Antarctic Marine Living Resources | CCAMLR | 1980 | Hobart, Australia | www.ccamlr.org |
 | Commonwealth Of Independent States | CIS | 1922 | | CIS.Minsk.by |
 | Commonwealth Of Learning | COL | 1988 | Metro Vancouver, Canada | www.col.org |
 | Commonwealth Of Nations | | 1926 | Marlborough House, London, England, United Kingdom | thecommonwealth.org |
 | Community Of Latin American And Caribbean States | CELAC | 2010 | | |
 | Community Of Portuguese Language Countries | CPLP | 1996 | Palace Of The Counts Of Penafiel Lisbon, Portugal | www.cplp.org |
 | Comprehensive Nuclear-Test-Ban Treaty Organization | CTBTO | 1997 | Vienna, Austria | www.ctbto.org |
 | Conference On Disarmament | CD | 1984 | Palais Des Nations | www.unog.ch |
 | Council For Mutual Economic Assistance | Comecon | 1949 | Moscow | |
 | Council Of Europe | CoE | 1949 | Strasbourg, France | www.coe.int |
 | Council Of Europe Development Bank | CEB | 1956 | Paris | |
 | Council Of The Baltic Sea States | CBSS | 1992 | Stockholm, Sweden | www.cbss.org |
 | East African Community | EAC | 1967 | Arusha | www.eac.int |
 | Economic Community Of Central African States | ECCAS | 1983 | | ceeac-eccas.org |
 | Economic Community Of West African States | ECOWAS | 1975 | Abuja, Nigeria | www.ecowas.int |
 | Economic Cooperation Organization | ECO | 1964 | Tehran, Iran | www.eco.int |
 | Energy Charter Treaty | ECT | 1991 | Brussels, Belgium | www.energycharter.org |
 | Energy Community | | 2005 | Vienna, Austria | www.energy-community.org |
.gif) | EUCLID (university) | | 2008 | Gambia, Belgium | www.euclid.int |
 | Eurasian Development Bank | EDB | 2006 | Almaty, Kazakhstan | www.eabr.org |
 | Eurasian Economic Community | EAEC | 2000 | | www.eurasiancommission.org |
 | Eurasian Economic Union | EEU Or EAEU | 1994 | Moscow, Russia, Minsk, Belarus | eaeunion.org |
 | European Atomic Energy Community | EAEC | 1958 | | |
 | European Bank For Reconstruction And Development | EBRD | 1991 | London | ebrd.com |
 | European Centre For Medium-range Weather Forecasts | ECMWF | 1975 | Reading, United Kingdom | www.ecmwf.int |
 | European Cooperation In Science And Technology | COST | 1971 | | www.cost.eu |
 | European Free Trade Association | EFTA | 1960 | Geneva | efta.int |
 | European Fusion Development Agreement | EFDA | 1999 | Culham, United Kingdom, Garching, Germany | efda.org |
 | European Molecular Biology Laboratory | EMBL | 1974 | Heidelberg | www.embl.org |
 | European Organisation For The Exploitation Of Meteorological Satellites | EUMETSAT | 1986 | Darmstadt, Germany | www.eumetsat.int |
 | European Organisation For The Safety Of Air Navigation | EUROCONTROL | 1960 | Brussels, Belgium | www.eurocontrol.int |
 | European Patent Organisation | EPOrg | 1977 | Munich | www.epo.org |
 | European Science Foundation | ESF | 1974 | Strasbourg, France | www.esf.org |
 | European Southern Observatory | ESO | 1962 | Garching, Germany | ESO.org |
 | European Space Agency | ESA | 1975 | Paris, Île-de-France, France | www.esa.int |
 | European Synchrotron Radiation Facility | ESRF | 1994 | Grenoble, France | www.esrf.eu |
 | European Union | EU | 1958 | | europa.eu |
 | European University Institute | EUI | 1972 | Vincenzo Grassi | www.eui.eu |
 | European X-ray Free Electron Laser | European XFEL | 2009 | Schenefeld, Germany | www.xfel.eu |
 | Financial Action Task Force | FATF | 1989 | Paris, France | www.fatf-gafi.org |
 | Food And Agriculture Organization | FAO | 1945 | Palazzo FAO, Rome, Italy | FAO.org |
 | Global Environment Facility | GEF | 1992 | Washington DC, United States | www.thegef.org |
 | GUAM Organization For Democracy And Economic Development | | 1997 | Kiev, Ukraine | guam-organization.org |
 | Gulf Cooperation Council | GCC | 1981 | Riyadh, Saudi Arabia | www.gcc-sg.org |
 | Indian Ocean Commission | COI | 1982 | Port Louis, Mauritius | commissionoceanindien.org |
 | Indian Ocean Tuna Commission | IOTC | 1996 | Victoria, Seychelles | www.iotc.org |
 | Indian-Ocean Rim Association | IORA | 1997 | Ebene Cyber City, Mauritius | iora.net |
 | Institut Laue–Langevin | ILL | 1967 | | |
 | Inter-American Development Bank | IDB/BID | 1959 | New York Avenue NW,Washington, D.C. ,United States | www.iadb.org |
 | Inter-American Tropical Tuna Commission | IATTC | 1949 | La Jolla, San Diego, California, United States | |
 | Intergovernmental Authority On Development | IGAD | 1986 | Djibouti City | www.igad.org |
 | Intergovernmental Organisation For International Carriage By Rail | OTIF | 1985 | Berne, Switzerland | www.otif.org |
 | Intergovernmental Panel On Climate Change | IPCC | 1988 | Geneva, Switzerland | www.ipcc.ch |
 | International Atomic Energy Agency | IAEA | 1957 | Vienna, Austria | IAEA.org |
 | International Authority For The Ruhr | IAR | 1949 | | |
 | International Bank For Reconstruction And Development | IBRD | 1944 | Washington, D.C., United States | worldbank.org/ibrd |
 | International Bureau Of Education | IBE-UNESCO | 1925 | Geneva, Switzerland | www.ibe.unesco.org |
 | International Bureau Of Weights And Measures | BIPM | 1875 | France | www.bipm.org |
 | International Centre For Migration Policy Development | ICMPD | 1993 | Vienna | icmpd.org |
 | International Centre For Settlement Of Investment Disputes | ICSID | 1966 | Washington, D.C., United States | icsid.worldbank.org |
 | International Centre For The Study Of The Preservation And Restoration Of Cultural Property | ICCROM | 1956 | Rome, Italy | www.iccrom.org |
 | International Civil Aviation Organization | ICAO | 1947 | Montreal, Quebec, Canada | www.icao.int |
 | International Commission For The Conservation Of Atlantic Tunas | ICCAT | 1969 | Rio De Janeiro, Brazil | www.iccat.int |
 | International Commission On Civil Status | ICCS | 1948 | Secretariat General | ciec1.org |
 | International Commission On Missing Persons | ICMP | 1996 | The Hague | www.icmp.int |
 | International Cospas-Sarsat Programme | | 1988 | Montreal, Quebec, Canada | www.cospas-sarsat.int |
 | International Council For The Exploration Of The Sea | ICES | 1902 | Copenhagen, Denmark | www.ices.dk |
 | International Criminal Court | ICC | 1998 | The Hague, Netherlands | www.icc-cpi.int |
 | International Criminal Police Organization | Interpol | 1923 | Lyon, France | www.interpol.int |
 | International Development Association | IDA | 1960 | Washington, D.C | worldbank.org/ida |
 | International Development Law Organization | IDLO | 1983 | Rome, Italy | idlo.int |
 | International Energy Agency | IEA | 1974 | Paris, France | www.iea.org |
 | International Energy Forum | IEF | 1991 | Riyadh, Saudi Arabia | www.ief.org |
 | International Finance Corporation | IFC | 1956 | Washington, DC | ifc.org |
 | International Fund For Agricultural Development | IFAD | 1977 | Rome, Italy | www.ifad.org |
 | International Hydrographic Organization | IHO | 1921 | Monaco | www.iho.int |
 | International Institute For Applied Systems Analysis | IIASA | 1972 | Laxenburg, Austria | www.iiasa.ac.at |
 | International Institute For Democracy And Electoral Assistance | International IDEA | 1990 | Stockholm, Sweden | www.idea.int |
 | International Institute For The Unification Of Private Law | UNIDROIT | | Rome, Italy | www.unidroit.org |
 | International Labour Organization | ILO | 1919 | Geneva, Switzerland | www.ilo.org |
 | International Maritime Organization | IMO | 1959 | London, United Kingdom | www.imo.org |
 | International Monetary Fund | IMF | 1945 | Washington, D.C., U.S. | imf.org |
 | International Network For Bamboo And Rattan | INBAR | 1997 | Beijing, China | www.inbar.int |
 | International Organization For Migration | IOM | 1951 | Geneva, Switzerland | www.iom.int |
 | International Organization Of Turkic Culture | TÜRKSOY | 1993 | Ankara, Turkey | www.turksoy.org |
 | International Pacific Halibut Commission | IPHC | 1923 | Washington, United States | www.iphc.int |
 | International Renewable Energy Agency | IRENA | 2009 | Masdar City, United Arab Emirates | www.irena.org |
 | International Seabed Authority | ISA | 1994 | Kingston, Jamaica | www.isa.org.jm |
 | International Solar Alliance | ISA | | Gwal Pahari, Gurugram, Haryana, India | www.isolaralliance.org |
 | International Telecommunication Union | ITU | 1865 | Geneva, Switzerland | ITU.int |
 | International Whaling Commission | IWC | 1946 | Impington, Near Cambridge, England | iwc.int |
 | Islamic Development Bank | IDB | 1975 | Jeddah, Saudi Arabia | www.isdb.org |
 | Joint United Nations Programme On HIV/AIDS | UNAIDS | 1994 | Geneva, Switzerland | www.unaids.org |
 | Latin Union | | 1954 | Paris, France | www.unilat.org |
 | League Of Nations | LN | 1920 | Palais Wilson in Geneva, Switzerland | |
 | Mekong River Commission | MRC | 1995 | Vientiane, Laos, Phnom Penh, Cambodia | www.mrcmekong.org |
 | Melanesian Spearhead Group | MSG | 1986 | Port Vila, Vanuatu | www.msgsec.info |
 | Multilateral Investment Guarantee Agency | MIGA | 1988 | Washington, D.C. | miga.org |
 | Netherlands Development Finance Company | FMO | 1970 | The Hague, Netherlands | www.fmo.nl |
 | New Development Bank | NDB | 2014 | Shanghai, China | www.ndb.int |
 | Non-Aligned Movement | NAM | 1961 | Jakarta, Indonesia | csstc.org |
 | Nordic Development Fund | NDF | 1989 | Helsinki, Finland | |
 | Nordic Investment Bank | NIB | 1970 | Helsinki, Finland | www.nib.int |
 | North Atlantic Salmon Conservation Organization | NASCO | 1983 | Edinburgh, United Kingdom | www.nasco.int |
 | North Atlantic Treaty Organization | NATO | 1949 | Brussels, Belgium | NATO.int |
 | North-East Atlantic Fisheries Commission | NEAFC | 1980 | | www.neafc.org |
 | Northern Dimension Partnership In Public Health And Social Well-being | NDPHS | 2003 | Stockholm, Sweden | www.ndphs.org |
 | Northwest Atlantic Fisheries Organization | NAFO | 1979 | Dartmouth, Nova Scotia, Canada | www.nafo.int |
 | Nuclear Energy Agency | NEA | 1958 | Paris, France | www.oecd-nea.org |
 | Nuclear Suppliers Group | NSG | 1974 | | www.nuclearsuppliersgroup.org |
 | OPEC Fund For International Development | OFID | 1976 | Vienna, Austria | www.ofid.org |
 | Organisation For Economic Co-operation And Development | OECD | 1948 | Paris, France | www.oecd.org |
 | Organisation For Joint Armament Cooperation | OCCAR | 1996 | France, Germany, Italy, United Kingdom | www.occar.int |
 | Organisation For The Prohibition Of Chemical Weapons | OPCW | 1997 | The Hague, Netherlands | opcw.org |
 | Organisation Internationale De La Francophonie | OIF | 1970 | Paris, France | francophonie.org |
 | Organisation Of Eastern Caribbean States | OECS | 1981 | | www.oecs.org |
 | Organisation Of Islamic Cooperation | OIC | 1969 | Jeddah, Saudi Arabia | www.oic-oci.org |
 | Organization For Security And Co-operation In Europe | OSCE | 1973 | Vienna, Austria | www.osce.org |
 | Organization Of American States | OAS | 1948 | Washington, D.C | oas.org |
 | Organization Of Ibero-American States | OEI | 1949 | Madrid, Spain | |
 | Organization Of Petroleum-Exporting Countries | OPEC | 1960 | Vienna, Austria | OPEC.org |
 | Organization Of The Black Sea Economic Cooperation | BSEC | 1992 | Istanbul, Turkey | www.bsec-organization.org |
 | Pacific Islands Forum | PIF | 1971 | Suva, Fiji | www.forumsec.org |
 | Pacific Regional Environment Programme | SPREP | 1993 | Apia, Samoa | www.sprep.org |
 | Pacific Salmon Commission | PSC | 1937 | Vancouver, British Columbia | www.psc.org/index.htm |
 | Partnerships In Environmental Management For The Seas Of East Asia | PEMSEA | 1994 | Quezon City, Philippines | www.pemsea.org |
 | Renewable Energy And Energy Efficiency Partnership | REEEP | 2002 | | |
 | Shanghai Cooperation Organisation | SCO | 2001 | Beijing, China | SectSCO.org |
 | South Asian Association For Regional Cooperation | SAARC | 1985 | Kathmandu | www.saarc-sec.org |
 | South Atlantic Peace And Cooperation Zone | ZPCAS | 1986 | Brasília, Brazil | |
 | Southeast Asia Treaty Organization | SEATO | 1954 | Bangkok, Thailand | |
 | Southeast Asian Fisheries Development Center | SEAFDEC | 1967 | Bangkok, Thailand | www.seafdec.org, www.seafdec.or.id |
 | Southeast Asian Ministers Of Education Organization | SEAMEO | 1965 | | |
 | Southern African Development Community | SADC | 1980 | Gaborone, Botswana | www.sadc.int |
 | Sustainable Energy For All | SE4ALL | | | |
 | Synchrotron-Light For Experimental Science And Applications In The Middle East | SESAME | 2017 | Al Balqa, Jordan | www.sesame.org.jo |
 | System Of Cooperation Among The American Air Forces | SICOFAA | 1961 | | www.sicofaa.org |
 | The International Union For Conservation Of Nature | IUCN | 1948 | Gland VD, Switzerland | www.iucn.org |
 | Transport Corridor Europe-Caucasus-Asia | TRACECA | 1993 | Baku, Azerbaijan, Eurasia | www.traceca-org.org/en/home/ |
 | Trilateral Cooperation Secretariat | TCS | 2011 | Seoul | www.tcs-asia.org |
 | Union For The Mediterranean | UFM | 2008 | Barcelona, Spain | ufmsecretariat.org |
 | Union Of South American Nations | USAN | 2004 | Caracas, Venezuela | unasur.int/en |
 | United Nations Atomic Energy Commission | UNAEC | 1946 | | |
 | United Nations Capital Development Fund | UNCDF | 1966 | New York | |
 | United Nations Development Programme | UNDP | 1965 | New York City | www.undp.org |
 | United Nations Educational, Scientific And Cultural Organization | UNESCO | 1946 | Place De Fontenoy, Paris, France | unesco.org |
 | United Nations Environment Programme | UNEP | 1972 | Nairobi, Kenya | www.unenvironment.org |
 | United Nations Human Rights Council | UNHRC | 2006 | Geneva, Switzerland | ohchr.org/en/hrbodies/ hrc/pages/hrcindex.aspx |
 | United Nations Human Settlements Programme | UN–Habitat | 1978 | Nairobi, Kenya | www.unhabitat.org |
 | United Nations Industrial Development Organization | UNIDO | 1966 | Vienna, Austria | www.unido.org |
 | United Nations International Children's Emergency Fund | UNICEF | 1946 | New York City, New York, U.S. | www.unicef.org |
 | United Nations International Strategy For Disaster Reduction | UNISDR | 1999 | Geneva, Switzerland | www.unisdr.org |
 | United Nations Office On Drugs And Crime | UNODC | 1997 | Vienna, Austria | www.unodc.org |
 | United Nations University | UNU | 1973 | Shibuya, Tokyo, Japan | www.unu.edu |
 | Universal Postal Union | UPU | 1874 | Bern, Switzerland | www.UPU.int |
 | West African Development Bank | BOAD | 1973 | Lomé, Togo | www.boad.org/en |
 | West Nordic Council | | 1985 | | |
 | Western And Central Pacific Fisheries Commission | WCPFC | 2004 | Kolonia, Pohnpei, Federated States Of Micronesia | www.wcpfc.int |
 | Western European Union | WEU | 1954 | | |
 | World Association Of Nuclear Operators | WANO | 1989 | London, United Kingdom | www.wano.info |
 | World Bank Group | WBG | 1944 | NW Washington, DC ,USA | worldbank.org |
 | World Customs Organization | WCO | 1952 | Brussels, Belgium | www.wcoomd.org |
 | World Food Programme | WFP | 1963 | Rome, Italy | www.wfp.org |
 | World Health Organization | WHO | 1948 | Geneva, Switzerland | www.who.int |
 | World Intellectual Property Organization | WIPO | 1967 | Geneva, Switzerland | www.wipo.int |
 | World Meteorological Organization | WMO | 1950 | Geneva, Switzerland | public.wmo.int |
 | World Organisation For Animal Health | OIE | 1924 | Paris | www.oie.int |
 | World Tourism Organization | UNWTO | 1975 | Madrid, Spain | UNWTO website |
 | World Trade Organization | WTO | 1995 | Centre William Rappard, Geneva, Switzerland | www.wto.org |