International organization membership of the United States

• Agreement between the United States of America, the United Mexican States, and Canada (USMCA) • Antarctic Treaty System (ATS) • Asian Development Bank (ADB) (nonregional member) • Asia-Pacific Economic Cooperation (APEC) • Association of Southeast Asian Nations (ASEAN) (dialogue partner) • Australia Group • Australia-New Zealand-United States Security Treaty (ANZUS) • Bank for International Settlements (BIS) • Black Sea Economic Cooperation Zone (BSEC) (observer) • Board of Peace • C5+1 • Council of Europe (CE) (observer) • Council of the Baltic Sea States (CBSS) (observer) • Dominican Republic–Central America Free Trade Agreement (CAFTA-DR) • 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) • Group of Seven (G7) • Group of Ten (G10) • Group of Twenty Finance Ministers and Central Bank Governors (G20) • Inter-American Development Bank (IADB) • International Chamber of Commerce (ICC) • International Criminal Police Organization (Interpol) • International Energy Agency (IEA) • International Federation of Red Cross and Red Crescent Societies (IFRCS) • International Grains Council (IGC) • International Hydrographic Organization (IHO) • International Mobile Satellite Organization (IMSO) • International Olympic Committee (IOC) • International Organization for Standardization (ISO) • International Red Cross and Red Crescent Movement (ICRM) • International Telecommunications Satellite Organization (ITSO) • International Trade Union Confederation (ITUC) • North Atlantic Treaty Organization (NATO) • Nuclear Energy Agency (NEA) • Nuclear Suppliers Group (NSG) • Organisation for Economic Co-operation and Development (OECD) • Organization for Security and Cooperation in Europe (OSCE) • Organization of American States (OAS) • Pacific Community (SPC) • Pacific Islands Forum (PIF) (partner) • Paris Club • Permanent Court of Arbitration (PCA) • South Asian Association for Regional Cooperation (SAARC) (observer) • Southeast European Cooperative Initiative (SECI) (observer) • United Nations (UN) - Membership in the UN includes participation in the UN's Six Principal Organs: the General Assembly, Secretariat, International Court of Justice, Security Council, Economic and Social Council, and Trusteeship Council. • United Nations System • Food and Agriculture Organization (FAO) • International Atomic Energy Agency (IAEA) • International Civil Aviation Organization (ICAO) • International Fund for Agricultural Development (IFAD) • International Labour Organization (ILO) • International Maritime Organization (IMO) • International Monetary Fund (IMF) • International Organization for Migration (IOM) • International Telecommunication Union (ITU) • Organisation for the Prohibition of Chemical Weapons (OPCW) • Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO Preparatory Commission) • United Nations Children's Fund (UNICEF) • 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 Mission for Justice Support in Haiti (INUJUSTH) • United Nations Truce Supervision Organization (UNTSO) • Universal Postal Union (UPU) • World Bank Group (WBG) • International Bank for Reconstruction and Development (IBRD) • International Centre for Settlement of Investment Disputes (ICSID) • International Development Association (IDA) • International Finance Corporation (IFC) • Multilateral Investment Guarantee Agency (MIGA) • World Food Programme (WFP) • World Intellectual Property Organization (WIPO) • World Meteorological Organization (WMO) • World Trade Organization (WTO) • World Customs Organization (WCO) • World Organization of the Scout Movement (WOSM) • World Veterans Federation (WVF) • Zangger Committee (ZC) == Currently withdrawing ==