| Organization | Headquarters | Established |
| International Solar Alliance | Gurugram, India | 2015 |
| Organization for the Prohibition of Chemical Weapons (OPCW) | The Hague, Netherlands | 1997 |
| International Court of Justice (ICJ) | The Hague, Netherlands | 1945 |
| United Nations Development Programme (UNDP) | New York City, USA | 1965 |
| United Nations Population Fund (UNPF) | New York City, USA | 1969 |
| United Nations Children’s Fund (UNICEF) | New York City, USA | 1946 |
| UN Women | New York City, USA | 2010 |
| Group of Eight (G8) | New York City, USA | 1975 |
| United Nations Human Settlement Programme (UN-Habitat) | Nairobi, Kenya | 1978 |
| United Nations Environment Programme (UNEP) | Nairobi, Kenya | 1972 |
| World Food Programme (WFP) | Rome, Italy | 1961 |
| Food and Agriculture Organization (FAO) | Rome, Italy | 1945 |
| International Fund for Agricultural Development (IFAD) | Rome, Italy | 1977 |
| International Civil Aviation Organization (ICAO) | Montreal, Canada | 1947 |
| International Monetary Fund (IMF) | Washington, DC, USA | 1944 |
| World Bank | Washington, DC, USA | 1944 |
| International Maritime Organization (IMO) | London, United Kingdom | 1948 |
| United Nations Educational, Scientific and Cultural Organization (UNESCO) | Paris, France | 1945 |
| United Nations Industrial Development Organization (UNIDO) | Vienna, Austria | 1966 |
| World Tourism Organization (UNWTO) | Madrid, Spain | 1974 |
| Universal Postal Union (UPU) | Bern, Switzerland | 1874 |
| International Telecommunication Union (ITU) | Geneva, Switzerland | 1865 |
| International Labour Organization (ILO) | Geneva, Switzerland | 1919 |
| World Health Organization (WHO) | Geneva, Switzerland | 1948 |
| World Intellectual Property Organization (WIPO) | Geneva, Switzerland | 1967 |
| World Meteorological Organization (WMO) | Geneva, Switzerland | 1950 |
| United Nations Programme on HIV/AIDS (UNAIDS) | Geneva, Switzerland | 1994 |
| United Nations High Commissioner for Refugees (UNHCR) | Geneva, Switzerland | 1950 |
| United Nations Institute for Disarmament Research (UNIDIR) | Geneva, Switzerland | 1980 |
| United Nations Institute for Training and Research (UNITAR) | Geneva, Switzerland | 1963 |
| International Trade Centre (ITC) | Geneva, Switzerland | 1964 |
| World Trade Organization (WTO) | Geneva, Switzerland | 1995 |
| United Nations Office for Project Services (UNOPS) | Copenhagen, Denmark | 1973 |
| United Nations Relief and Works Agency for Palestine Refugees (UNRWA) | Amman, Jordan | 1949 |
| United Nations System Staff College (UNSSC) | Turin, Italy | 2002 |
| United Nations University (UNU) | Tokyo, Japan | 1973 |
| International Atomic Energy Agency (IAEA) | Vienna, Austria | 1957 |
| International Organization for Migration (IOM) | Geneva, Switzerland | 1951 |
| United Nations Framework Convention on Climate Change (UNFCCC) | Bonn, Germany | 1994 (Signed in 1993) |
| African Development Bank Group | Abidjan, Cote d’Ivoire | 1964 |
| African Union (AU) | Addis Abab, Ethiopia | 2002 |
| Amnesty International (AI) | London, United Kingdom | 1961 |
| Andean Community | Lima, Peru | 1969 |
| Arctic Council | Tromso, Norway | 1996 |
| Asia-Pacific Economic Cooperation (APEC) | Queenstown, Singapore | 1989 |
| Asian Development Bank (ADB) | Mandaluyong (Manila), Philippines | 1966 |
| Association of Caribbean States (ACS) | Port of Spain, Trinidad, Tobago | 1994 |
| Association of Southeast Asian Nations (ASEAN) | Jakarta, Indonesia | 1967 |
| Bank for International Settlements (BIS) | Basel, Switzerland | 1930 |
| Black Sea Economic Cooperation (BSEC) | Istanbul, Turkey | 1992 |
| Caribbean Community (CARICOM) | Georgetown, Guyana | 1973 |
| Central American Bank for Economic Integration | Tegucigalpa, Honduras | 1960 |
| Common Market for Eastern and Southern Africa (COMESA) | Lusaka, Zambia | 1994 |
| Commonwealth Secretariat | London, United Kingdom | 1965 |
| Council of Europe | Strasbourg, France | 1949 |
| Council of Europian Municipalities and Regions (CEMR) | Geneva, Switzerland | 1951 |
| Council of the Baltic Sea States (CBSS) | Stockholm, Switzerland | 1992 |
| Economic Community of West African States (ECOWAS) | Federal Capital Territory, Nigeria | 1975 |
| European Bank for Reconstruction and Development (EBRD) | London, United Kingdom | 1991 |
| European Central Bank (ECB) | Frankfurt, Germany | 1998 |
| European Free Trade Association (EFTA) | Geneva, Switzerland | 1960 |
| Association of European Parliamentarians with Africa (AWEPA) | Amsterdam, Netherlands | 1984 |
| European Space Agency (ESA) | Paris, France | 1975 |
| European Union (EU) | Brussels, Belgium | 1993 |
| G-15 Summit | Geneva, Switzerland | 1990 |
| Inter-American Development Bank (IDB) | Washington, DC, USA | 1959 |
| Intergovernmental Authority on Development (IGAD) | Djibouti, Djibouti | 1986 |
| International Chamber of Commerce (ICC) | Paris, France | 1919 |
| International Committee of the Red Cross (ICRC) | Geneva, Switzerland | 1863 |
| International Development Association (IDA) | Washington, DC, USA | 1960 |
| International Federation of Red Cross and Red Crescent Socities (IFRC) | Geneva, Switzerland | 1919 |
| International Finance Corporation (IFC) | Washington, DC, USA | 1956 |
| International Olympic Committee (IOC) | Lausanne, Switzerland | 1894 |
| International Organization for Standardization (ISO) | Geneva, Switzerland | 1947 |
| International Peace Bureau (IPB) | Geneva, Switzerland | 1891 |
| International Seabed Authority (ISA) | Kingston, Jamaica | 1994 |
| International Service for Human Rights (ISHR) | Geneva, Switzerland | 1984 |
| Inter-Parliamentary Union | Geneva, Switzerland | 1889 |
| League of Arab States | Cairo, Egypt | 1945 |
| Multilateral Investment Guarantee Agency (MIGA) | Washington, DC, USA | 1988 |
| The Non-Aligned Movement (NAM) | Central Jakarta, Indonesia | 1961 |
| Nordic Council of Ministers | Copenhagen, Denmark | 1971 |
| North Atlantic Treaty Organization (NATO) | Washington, DC, USA | 1949 |
| Organisation for Economic Co-operation and Development (OECD) | Paris, France | 1961 |
| Organization for Security and Co-operation in Europe (OSCE) | Vienna, Austria | 1975 |
| Organization of Arab Petroleum Exporting Countries (OAPEC) | Kuwait, Middle East | 1968 |
| Organization of the Islamic Conference (OIC) | Jeddah, Saudi Arabia | 1969 |
| Organization of the Petroleum Exporting Countries (OPEC) | Vienna, Austria | 1960 |
| Secretariat of the Pacific Community (SPC) | Noumea, New Caledonia | 1947 |
| South Asian Association for Regional Cooperation (SAARC) | Kathmandu, Nepal | 1985 |
| United Cities & Local Governments (UCLG) | Barcelona, Spain | 2004 |
| United Nations Economic and Social Commission for Asia and the Pacific (ESCAP) | Bangkok, Thailand | 1947 |
| United Nations Economic and Social Commission for Western Asia (ESCWA) | Beirut, Lebanon | 1973 |
| United Nations High Commissioner for Human Rights (UNHCHR) | Geneva, Switzerland and New York City, USA | 1993 |
| United Nations Office on Drugs and Crime (UNODC) | Vienna, Austria | 1997 |
| United Nations International Research and Training Institute for the Advancement of Women (INSTRAW) | Santo Domingo, Dominican Republic | 1975 |
| United Nations Office for the Coordination of Humanitarian Affairs (OCHA) | Geneva, Switzerland and New York City, USA | 1991 |
| United Nations Relief and Works Agency for Palestine Refugees in the Near East (UNRWA) | Amman, Jordan | 1949 |
| World Federation of United Nations Associations (WFUNA) | Geneva, Switzerland and New York City, USA | 1946 |
| World Organization Against Torture (OMCT) | Geneva, Switzerland | 1985 |
| World Wide Fund for Nature (WWF) | Gland, Switzerland | 1961 |
