The following is a list of international organizations in which the United States of America officially participates.
Asian Development Bank (ADB) (nonregional member)Asia-Pacific Economic Cooperation (APEC)Association of Southeast Asian Nations (ASEAN) (dialogue partner)Association of Southeast Asian Nations Regional Forum (ARF)Australia GroupAustralia-New Zealand-United States Security Treaty (ANZUS)Bank for International Settlements (BIS)Black Sea Economic Cooperation Zone (BSEC) (observer)Colombo Plan (CP)Council of Europe (CE) (observer)Council of the Baltic Sea States (CBSS) (observer)Euro-Atlantic Partnership Council (EAPC)European Bank for Reconstruction and Development (EBRD)European Organization for Nuclear Research (CERN) (observer)Fédération Internationale de Football Association (FIFA)Food and Agriculture Organization (FAO)Group of Five (G5)Group of Seven (G7)Group of Eight (G8)Group of Ten (G10)Group of Twenty Finance Ministers and Central Bank Governors (G20)Inter-American Development Bank (IADB)International Atomic Energy Agency (IAEA)International Bank for Reconstruction and Development (IBRD)International Chamber of Commerce (ICC)International Civil Aviation Organization (ICAO)International Criminal Court (ICCt) (signatory)International Criminal Police Organization (Interpol)International Development Association (IDA)International Energy Agency (IEA)International Federation of Red Cross and Red Crescent Societies (IFRCS)International Finance Corporation (IFC)International Fund for Agricultural Development (IFAD)International Hydrographic Organization (IHO)International Labour Organization (ILO)International Maritime Organization (IMO)International Mobile Satellite Organization (IMSO)International Monetary Fund (IMF)International Olympic Committee (IOC)International Organization for Migration (IOM)International Organization for Standardization (ISO)International Red Cross and Red Crescent Movement (ICRM)International Telecommunication Union (ITU)International Telecommunications Satellite Organization (ITSO)International Trade Union Confederation (ITUC)Major League Baseball (MLB)Major League Soccer (MLS)Multilateral Investment Guarantee Agency (MIGA)National Basketball Association (NBANational Hockey League (NHL)North American Free Trade Agreement (NAFTA)North Atlantic Treaty Organization (NATO)Nuclear Energy Agency (NEA)Nuclear Suppliers Group (NSG)Organization for Economic Cooperation and Development (OECD)Organization for Security and Cooperation in Europe (OSCE)Organization for the Prohibition of Chemical Weapons (OPCW)Organization of American States (OAS)Pacific Islands Forum (PIF) (partner)Paris ClubPermanent Court of Arbitration (PCA)Secretariat of the Pacific Community (SPC)South Asian Association for Regional Cooperation (SAARC) (observer)Southeast European Cooperative Initiative (SECI) (observer)United Nations (UN)United Nations Conference on Trade and Development (UNCTAD)United Nations Educational, Scientific, and Cultural Organization (UNESCO)United Nations High Commissioner for Refugees (UNHCR)United Nations Institute for Training and Research (UNITAR)United Nations Mission in Liberia (UNMIL)United Nations Observer Mission in Georgia (UNOMIG)United Nations Relief and Works Agency for Palestine Refugees in the Near East (UNRWA)United Nations Security Council (UNSC) (permanent member)United Nations Stabilization Mission in Haiti (MINUSTAH)United Nations Truce Supervision Organization (UNTSO)Universal Postal Union (UPU)World Confederation of Labour (WCL)World Customs Organization (WCO)World Federation of Trade Unions (WFTU)World Health Organization (WHO)World Intellectual Property Organization (WIPO)World Meteorological Organization (WMO)World Trade Organization (WTO)Zangger Committee (ZC)