# List of official languages of international organizations

This is a list of official languages of international organizations. Different organizations sometimes refer to their principal languages of administration and communication as "working languages", while others refer to these as being "official". No distinction is made here, except where an organization itself, distinguishes between its official and working languages.
English and French are often regarded as the symbolic official languages, although the former has gained prominence in recent years.

## International

According to a recent study of multilingualism in 13 major international organizations (Commonwealth, ICC, ILO, IMF, IOC, IPU, ITU, OECD, UN, UPU, WB, WHO, and WTO), English is an official language in almost all (12). This is followed by French (10); Spanish (6); and Arabic, Chinese, and Russian (3 each). Interpretation is offered in Japanese and German as well for 2 organizations.
The six official languages of the United Nations reflects the languages of the permanent members of the Security Council (Chinese, English, French, and Russian), in addition to Arabic and Spanish. Another study found that the percentage of each language used at each United Nations meeting in 2010 was distributed as follows: English (98%), French (87%), Spanish (34%), Russian (10%), Arabic (7%), and Chinese (3%).
The following is a list of major international and inter-governmental organizations.
| Institutions | Languages |
| Amnesty International | Portuguese, Arabic, English, French and Spanish |
| Antarctic Treaty Secretariat (ATS) | English, French, Spanish and Russian |
| Bank for International Settlements (BIS) | English, French, German and Spanish |
| Commonwealth of Nations | English |
| Community of Portuguese Language Countries (CPLP) | Portuguese |
| FIFA | Arabic, English, French, Spanish, Russian and German |
| Holy See | Latin (official), Italian (administrative and diplomatic) and French (diplomatic) |
| International Civil Aviation Organization (ICAO) | Arabic, Chinese, English, French, Russian and Spanish |
| International Criminal Court (ICC) | Arabic, Chinese, English, French, Russian and Spanish (English and French are working languages) |
| International Criminal Police Organization (Interpol) | Arabic, English, French and Spanish |
| International Energy Agency (IEA) | English |
| International Federation of Journalists (IFJ) | English, French and Spanish |
| International Labour Organization (ILO/OIT) | English, French and Spanish |
| International Monetary Fund (IMF) | English (interpretation into Arabic, Chinese, French, German, Portuguese, Russian and Spanish) |
| International Olympic Committee (IOC/CIO) | French and English (with simultaneous interpretation provided for Arabic, German, Russian, and Spanish) |
| International Organization for Standardization (ISO) | English, French and Russian |
| International Telecommunication Union (ITU) | English, French and Spanish |
| International Union for Conservation of Nature (IUCN) | English, French and Spanish |
| Inter-Parliamentary Union (IPU) | French and English (with conferences also having simultaneous interpretation into Arabic and Spanish) |
| Latin Union (activities have been suspended since 2012) | Catalan, French, Spanish, Portuguese, Italian and Romanian |
| Médecins Sans Frontières | Arabic, English, French, Portuguese and Spanish |
| Organisation for Economic Co-operation and Development (OECD/OCDE) | English and French |
| Organisation internationale de la Francophonie (OIF) | French |
| Organization of Ibero-American States (OEI) | Spanish and Portuguese |
| Organisation of Islamic Cooperation (OIC/OCI) | Arabic, English and French |
| Red Cross | Arabic, English, French, Spanish, Russian, Portuguese and German |
| Rotary International | English, French, German, Italian, Japanese, Korean, Portuguese, and Spanish |
| Trans-Pacific Partnership (TPP) | English, French, and Spanish |
| United Nations Educational, Scientific and Cultural Organization (UNESCO) | Arabic, Chinese, English, French, Hindi, Indonesian, Italian, Portuguese, Russian and Spanish |
| United Nations (UN/ONU) | Under the Charter, the official languages are Chinese, English, French, Russian, Spanish as well as Arabic which was added in 1973. Portuguese is the only unofficial language to have its day (May 5) proclaimed as "World Day". See also: Official languages of the United Nations. |
| Universal Postal Union (UPU) | French (official) and English (working). Other languages translated: Arabic, Chinese, German, Portuguese, Russian and Spanish |
| World Bank (WB) | English (with conferences also having simultaneous interpretation into Arabic, Chinese, French, Russian and Spanish) |
| World Customs Organization | English, French, and Spanish (with translation offered into Arabic and Russian) |
| World Health Organization (WHO) | Arabic, Chinese, English, French, Russian, and Spanish. |
| World Intellectual Property Organization (WIPO) | Arabic, Chinese, English, French, German, Japanese, Portuguese, Russian, Spanish and Korean |
| World Trade Organization (WTO/OMC) | English, French and Spanish |
| African Development Bank | English, French |
| African Union (AU/UA) | Arabic, French, English, Portuguese, Spanish and Swahili |
| Greater Arab Free Trade Area (GAFTA) | Arabic |
| Arab League | Arabic |
| Asia-Pacific Economic Cooperation (APEC) | English |
| Asian Development Bank (ADB) | English |
| Asian Infrastructure Investment Bank (AIIB) | English |
| Association of Southeast Asian Nations (ASEAN) | English (working language), Burmese, Filipino, Indonesian, Khmer, Lao, Malay, Mandarin, Tamil, Thai and Vietnamese |
| Benelux | Dutch and French |
| Caribbean Community (CARICOM) | English, French, Dutch and Spanish |
| Caribbean Development Bank (CDB) | English |
| Central American Common Market (CACM) | Spanish |
| Common Market for Eastern and Southern Africa (COMESA) | English, French and Portuguese |
| Commonwealth of Independent States (CIS) | Russian |
| Cooperation Council for the Arab States of the Gulf (GCC) | Arabic |
| Council of Europe | English and French |
| East African Community (EAC) | English, French and Swahili |
| Economic Community of West African States (ECOWAS/CEDEAO) | English, French and Portuguese |
| Economic and Monetary Community of Central Africa (CEMAC) | French, Portuguese and Spanish |
| Eurasian Development Bank (EDB) | Russian |
| Eurasian Economic Union (EAEU) | Russian |
| European Space Agency (ESA) | English, French and German |
| European Union (EU/UE) | 24 official languages with three of these — English, French and German — being working languages of some internal EU bodies such as the European Commission |
| Group of Seven (G7), formerly the Group of Eight (G8) | English, French, German, Italian and Japanese |
| Gulf Cooperation Council (GCC) | Arabic |
| Indian Ocean Rim Association (IORA) | English |
| Islamic Development Bank (IDB) | Arabic, with French and English as working languages |
| Mercosur/Mercosul | Guarani, Portuguese and Spanish. |
| New Development Bank (NDB) | English |
| Nordic Investment Bank (NDB) | English |
| North American Free Trade Agreement (NAFTA) | English, Spanish and French. |
| Nordic Council (NC) | Danish, Norwegian and Swedish (working languages) |
| North Atlantic Treaty Organization (NATO/OTAN) | English and French. |
| Organization for Security and Co-operation in Europe (OSCE) | English, French, German, Italian, Russian and Spanish |
| Organization of the Petroleum Exporting Countries (OPEC) | English |
| Organization of American States (OAS/OEA) | Spanish, English, Portuguese and French. See also: Official languages of the Organization of American States |
| Pacific Islands Forum | English |
| Shanghai Cooperation Organisation (SCO) | Chinese and Russian. |
| South Asian Association for Regional Cooperation (SAARC) | English |
| South Pacific Commission (SPC) | English and French |
| Southern African Development Community (SADC) | English, French and Portuguese (working languages) |
| Union of South American Nations (Unasul-Unasur) | Dutch, English, Portuguese and Spanish |

## Defunct

| Institutions | Languages |
| Council for Mutual Economic Assistance (Comecon) | Russian |
| League of Nations | English and French |
| Warsaw Treaty Organization (WTO) | Czech, German, Polish and Russian |