| ABEDA | Arab Bank for Economic Development in Africa |
| ACC | Arab Cooperation Council |
| ACCT | Agency for the French-Speaking Community |
| ACP GROUP | African, Caribbean, and Pacific Group of States |
| AFDB | African Development Bank |
| AFESD | Arab Fund for Economic and Social Development |
| AMF | Arab Monetary Fund |
| AMU | Arab Maghreb Union |
| ANZUS | Australia-New Zealand-United States Security Treaty |
| APEC | Asia-Pacific Economic Cooperation |
| ARABSAT | Arab Satellite Communications Organization |
| ARF | ASEAN Regional Forum |
| ASDB | Asian Development Bank |
| ASEAN | Association of Southeast Asian Nations |
| AU | African Union |
| BCIE | Central American Bank for Economic Integration |
| BDEAC | Central African States Development Bank |
| BGN | United States Board on Geographic Names |
| BIODIVERSITY | Convention on Biological Diversity |
| BIS | Bank for International Settlements |
| BSEC | Black Sea Economic Cooperation Zone |
| CACM | Central American Common Market |
| CAEU | Council of Arab Economic Unity |
| CAN | Andean Community of Nations |
| CARICOM | Caribbean Community and Common Market |
| CBSS | Council of the Baltic Sea States |
| CCC | Customs Cooperation Council |
| CDB | Caribbean Development Bank |
| CE | Council of Europe |
| CEI | Central European Initiative |
| CEMA | Council for Mutual Economic Assistance |
| CEMAC | Monetary and Economic Community of Central Africa |
| CEPGL | Economic Community of the Great Lakes Countries |
| CEPT | Conference Europeenne des Postes et Telecommunications |
| CERN | European Organization for Nuclear Research |
| CIS | Commonwealth of Independent States |
| COCOM | Coordinating Committee on Export Controls |
| COMESA | Common Market for Eastern and Southern Africa |
| COMSAT | Communications Satellite Corporation |
| DIA | United States Defense Intelligence Agency |
| EADB | East African Development Bank |
| EAPC | Euro-Atlantic Partnership Council |
| EBRD | European Bank for Reconstruction and Development |
| EC | European Community |
| ECA | Economic Commission for Africa |
| ECE | Economic Commission for Europe |
| ECLAC | Economic Commission for Latin America and the Caribbean |
| ECO | Economic Cooperation Organization |
| ECOSOC | Economic and Social Council |
| ECOWAS | Economic Community of West African States |
| ECS | European Coal and Steel Community |
| EEC | European Economic Community |
| EEZ | exclusive economic zone |
| EFTA | European Free Trade Association |
| EIB | European Investment Bank |
| EMU | Economic and Monetary Union |
| ESA | European Space Agency |
| ESCAP | Economic and Social Commission for Asia and the Pacific |
| ESCWA | Economic and Social Commission for Western Asia |
| EU | European Union |
| EURATOM | European Atomic Energy Community |
| EUTELSAT | European Telecommunications Satellite Organization |
| FAO | Food and Agriculture Organization |
| FZ | Franc Zone |
| GATT | General Agreement on Tariffs and Trade |
| GCC | Gulf Cooperation Council |
| IADB | Inter-American Development Bank |
| IAEA | International Atomic Energy Agency |
| IANA | Internet Assigned Numbers Authority |
| IBEC | International Bank for Economic Cooperation |
| IBRD | International Bank for Reconstruction and Development (World Bank) |
| ICAO | International Civil Aviation Organization |
| ICC | International Chamber of Commerce or Inuit Circumpolar Conference |
| ICCT | International Criminal Court |
| ICFTU | International Confederation of Free Trade Unions |
| ICJ | International Court of Justice (World Court) |
| ICRC | International Committee of the Red Cross |
| ICRM | International Red Cross and Red Crescent Movement |
| ICSID | International Center for Secretariat of Investment Disputes |
| ICTR | International Criminal Tribunal for Rwanda |
| ICTY | International Criminal Tribunal for the former Yugoslavia |
| IDA | International Development Association |
| IDB | Islamic Development Bank |
| IEA | International Energy Agency |
| IFAD | International Fund for Agricultural Development |
| IFC | International Finance Corporation |
| IFCTU | International Federation of Christian Trade Unions |
| IFRCS | International Federation of Red Cross and Red Crescent Societies |
| IGAD | Inter-Governmental Authority on Development |
| IGADD | Inter-Governmental Authority on Drought and Development |
| IHO | International Hydrographic Organization |
| IIB | International Investment Bank |
| ILO | International Labor Organization |
| IMF | International Monetary Fund |
| IMO | International Maritime Organization |
| INMARSAT | International Maritime Satellite Organization |
| INOC | Indian Ocean Commission |
| INSTRAW | International Research and Training Institute for the Advancement of Women |
| INTELSAT | International Telecommunications Satellite Organization |
| INTERPOL | International Criminal Police Organization |
| INTERSPUTNIK | International Organization of Space Communications |
| IOC | International Olympic Committee |
| IOM | International Organization for Migration |
| ISO | International Organization for Standardization |
| ITU | International Telecommunication Union |
| LAES | Latin American Economic System |
| LAIA | Latin American Integration Association |
| LAS | League of Arab States |
| MERCOSUR | Southern Cone Common Market |
| MICAH | International Civilian Support Mission in Haiti |
| MIGA | Multilateral Investment Geographic Agency |
| MINURSO | United Nations Mission for the Referendum in Western Sahara |
| MONUC | United Nations Organization Mission in the Democratic Republic of the Congo |
| NAFTA | North American Free Trade Agreement |
| NAM | Nonaligned Movement |
| NATO | North Atlantic Treaty Organization |
| NC | Nordic Council |
| NEA | Nuclear Energy Agency |
| NGA | National Geospatial-Intelligence Agency |
| NIB | Nordic Investment Bank |
| NIC | newly industrializing country |
| NIE | newly industrializing economy |
| NIS | new independent states |
| NSG | Nuclear Suppliers Group |
| OAPEC | Organization of Arab Petroleum Exporting Countries |
| OECD | Organization for Economic Cooperation and Development |
| OECS | Organization of Eastern Caribbean States |
| OIC | Organization of the Islamic Conference |
| OMPI | World Intellectual Property Organization |
| OPEC | Organization of Petroleum Exporting Countries |
| OSCE | Organization for Security and Cooperation in Europe |
| PIF | Pacific Islands Forum |
| RG | Rio Group |
| SAARC | South Asian Association for Regional Cooperation |
| SACU | Southern African Customs Union |
| SADC | Southern African Development Community |
| SCO | Shanghai Cooperative Organization |
| SFRY | Socialist Federal Republic of Yugoslavia |
| SPARTECA | South Pacific Regional Trade and Economic Cooperation Agreement |
| SPC | South Pacific Commission |
| SPF | South Pacific Forum |
| TAT | Trans-Atlantic Telephone |
| UAE | United Arab Emirates |
| UDEAC | Central African Customs and Economic Union |
| UN | United Nations |
| UNCLOS | United Nations Convention on the Law of the Sea, also known as LOS |
| UNCTAD | United Nations Conference on Trade and Development |
| UNDCP | United Nations Drug Control Program |
| UNDOF | United Nations Disengagement Observer Force |
| UNDP | United Nations Development Program |
| UNEP | United Nations Environment Program |
| UNESCO | United Nations Educational, Scientific, and Cultural Organization |
| UNFICYP | United Nations Peace-keeping Force in Cyprus |
| UNFPA | United Nations Population Fund |
| UNHCR | United Nations High Commissioner for Refugees |
| UNHCRHR | United Nations High Commissioner for Human Rights |
| UNICEF | United Nations Children's Fund |
| UNICEP | United Nations International Comparison Program |
| UNICRI | United Nations Interregional Crime and Justice Research Institute |
| UNIDIR | United Nations Institute for Disarmament Research |
| UNIDO | United Nations Industrial Development Organization |
| UNIFIL | United Nations Interim Force in Lebanon |
| UNIKOM | United Nations Iraq-Kuwait Observation Mission |
| UNITAR | United Nations Institute for Training and Research |
| UNMEE | United Nations Mission in Ethiopia and Eritrea |
| UNMIBH | United Nations Mission in Bosnia and Herzegovina |
| UNMIK | United Nations Interim Administration Mission in Kosovo |
| UNMIL | United Nations Mission in Liberia |
| UNMISET | United Nations Mission of Support in East Timor |
| UNMOGIP | United Nations Military Observer Group in India and Pakistan |
| UNMOP | United Nations Mission of Observers in Prevlaka |
| UNMOT | United Nations Mission of Observers in Tajikistan |
| UNMOVIC | United Nations Monitoring, Verification, and Inspection Commission |
| UNOMIG | United Nations Observer Mission in Georgia |
| UNOPS | United Nations Office of Project Services |
| UNRISD | United Nations Research Institute for Social Development |
| UNRWA | United Nations Relief and Works Agency for Palestine Refugees in the Near East |
| UNSC | United Nations Security Council |
| UNSSC | United Nations System Staff College |
| UNTAET | United Nations Transitional Administration in East Timor |
| UNTSO | United Nations Truce Supervision Organization |
| UNU | United Nations University |
| UPU | Universal Postal Union |
| WADB | West African Development Bank |
| WAEMU | West African Economic and Monetary Union |
| WCL | World Confederation of Labor |
| WCO | World Customs Organization |
| WEU | Western European Union |
| WFC | World Food Council |
| WFP | World Food Program |
| WFTU | World Federation of Trade Unions |
| WHO | World Health Organization |
| WIPO | World Intellectual Property Organization |
| WMO | World Meteorological Organization |
| WTOO | World Tourism Organization |
| WTRO | World Trade Organization |
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