Category
page 1Intergovernmental organizations established by treaty
United Nations
global international and intergovernmental organization
African Union
supranational union in Africa
World Trade Organization
intergovernmental organization that intends to supervise and liberalize international trade

League of Arab States
organization of Arab states
Commonwealth of Independent States
regional organisation whose participating countries are former Soviet Republics
League of Nations
20th-century international organisation, predecessor to the United Nations
Shanghai Cooperation Organisation
The Shanghai Cooperation Organization (SCO) is a Eurasian political, economic and international security organisation of ten member states. It focuses on political, economic, security and counter-terrorism cooperation.
Organisation of Islamic Cooperation
international organization

Mercosur
The Southern Common Market (commonly known by abbreviations Mercosur in Spanish and Mercosul in Portuguese) is a South American trade bloc established by the Treaty of Asunción in 1991 and Protocol of Ouro Preto in 1994. Its full members are Argentina, Bolivia, Brazil, Paraguay, and Uruguay. Venezuela is a full member but has been suspended since 1 December 2016. Chile, Colombia, Ecuador, Guyana, Panama, Peru, and Suriname are associate countries.
Union of South American Nations
intergovernmental union
Asian Development Bank
regional development bank
South Asian Association for Regional Cooperation
economical, political and military Alliance of South Asian Nations in Nepal
European Free Trade Association
international trade organization and free trade area
Organisation for the Prohibition of Chemical Weapons
international organization based in The Hague
Collective Security Treaty Organization
intergovernmental military alliance among post-Soviet states

European Atomic Energy Community
The European Atomic Energy Community (EAEC or EURATOM) is an international organization established by the Euratom Treaty of 1957 with the original purpose of creating a specialist market for nuclear power in Europe, by developing nuclear energy and distributing it to its member states while selling the surplus to non-member states. Having become one of the three European Communities alongside the European Coal and Steel Community and the European Economic Community following the merger of their executive bodies in 1967, the Euratom is de facto under the authority of the European Union (EU) bu
Cooperation Council for the Arab States of the Persian Gulf
regional intergovernmental political and economic union consisting of many Arab states of the Persian Gulf
Caribbean Community
International organization with 15 member states and 5 associate members in the Caribbean region
International Bureau of Weights and Measures
intergovernmental organization established by the Metre Convention
European Economic Area
area of the European Union's internal market and some of EFTA states established in 1994
Western European Union
former international organization and military alliance
Southeast Asia Treaty Organization
former international organization for collective defense in Southeast Asia
International Organization for Migration
intergovernmental organization
International Development Association
international financial institution, member of the World Bank Group
Arab Maghreb Union
trade agreement among Arab countries
Central Treaty Organization
Military alliance involving Iran, Iraq, Pakistan, Turkey and the United Kingdom (1955-1979)
African Development Bank
multilateral development finance institution
International Finance Corporation
World Bank Group member financial institution
GUAM Organization for Democracy and Economic Development
organization
International Energy Agency
autonomous intergovernmental organisation
Zollverein
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General Conference on Weights and Measure
governing body of the BIPM made up of delegates from member states
Organisation of African, Caribbean and Pacific States
intergovernmental organization of countries in Africa, the Caribbean, and the Pacific
Andean Community
Integration organization of the Andean region of South America, formed by Bolivia, Colombia, Ecuador and Peru
Permanent Court of Arbitration
intergovernmental organization

ALBA
ALBA or ALBA–TCP, formally the Bolivarian Alliance for the Peoples of Our America () or the '''Bolivarian Alliance for the Peoples of Our America – Peoples' Trade Treaty''' (), is an intergovernmental organization based on the idea of political and economic integration of Latin American and Caribbean countries.
Dutch Language Union
Dutch language regulator

New Development Bank
multilateral development bank established by the BRICS states
World Customs Organization
intergovernmental organization
International Whaling Commission
international body regulating whaling
International Agency for Research on Cancer
organization

EUMETSAT
The European Organisation for the Exploitation of Meteorological Satellites (EUMETSAT) is an intergovernmental organisation created through an international convention agreed by a current total of 30 European Member States.
International Centre for Settlement of Investment Disputes
international organization
Bureau of International Expositions
international organization
International Tribunal for the Law of the Sea
intergovernmental organization based in Hamburg, Germany
Economic Community of Central African States
customs union
Multilateral Investment Guarantee Agency
International financial institution
Organisation of Eastern Caribbean States
inter-governmental organization
European University Institute
International postgraduate and post-doctoral teaching and research institute established by European Union member states to contribute to cultural and scientific development in the social sciences

Common Market for Eastern and Southern Africa
free trade area
Central American Integration System
economic and political organization of Central American states
Southern African Customs Union
customs union, established in 1910, among five countries of Southern Africa: Botswana, Lesotho, Namibia, South Africa and Swaziland
Association of Caribbean States
regional intergovernmental organization
International Renewable Energy Agency
international organization

European Molecular Biology Laboratory
molecular biology research institution
International Seabed Authority
Intergovernmental body to regulate mineral-related activities on the seabed
Rio Group
founded 1986, an international organization of Latin American states
Pacific Community
principal scientific and technical organization in the Pacific region
Inter-American Court of Human Rights
judicial institution of the Organization of American States
Community of Sahel-Saharan States
International organization