The United Nations established six principal organs of the Organization: the General Assembly, the United Nations Security Council, the Economic and Social Council, the United Nations Trusteeship Council (this Council suspended operations in (1994), the International Court of Justice, and the Secretariat. The Charter allowed for the creation of any other entities that were seen as required. Since its creation, the United Nations is now considerably larger, encompassing numerous specialised organisations and agencies, programmes and funds, training and research bodies as well as other service providers. There are also numerous subsidiary bodies, including committees, commissions, boards, councils, panels, and working groups some of which this list includes.
This list is a work in progress and should be cross checked with other sources. (A more comprehensive list is available at the United Nations System article.)UN specialized agencies are:-•FAO - Food and Agricultural Organization.•ICAO - International Civil Aviation Organization.•IFAD - International Fund for Agricultural Development.•ILO - International Labour Organization.•IMF - International Monetary Fund.•IMO - International Maritime Organization.
The United Nations maintains and supports a number of specialized organizations and agencies. These differ from the programs and funds in that they are headed by an executive board of member states, separate from the General Assembly. Sometimes they do not report to the General Assembly or Security Council but only to their own member states. Some of these bodies also predate the United Nations as is the case for the ITU formed in 1865 to administer an international treaty and the ILO created as part of the League of Nations.
| Comment | |||||||
| 1 | FAO | Food and Agriculture Organization |  Rome, Italy | 1946 | |||
| 2 | IAEA | International Atomic Energy Agency |  Vienna, Austria | 1957 | Associated agency | ||
| 3 | ICAO | International Civil Aviation Organization |  Montreal, Quebec, Canada | 1947 | |||
| 4 | IFAD | International Fund for Agricultural Development | Rome, Italy | Gilbert F. Houngbo | 1977 | ||
| 5 | ILO | International Labour Organization | Geneva, Switzerland | Guy Ryder | 1919 | Originally part of League of Nations | |
| 6 | IMO | International Maritime Organization |  London, United Kingdom | Kitack Lim | 1948 | ||
| 7 | IMF | International Monetary Fund |  Washington, D.C., United States | 1945 | |||
| 8 | ITU | International Telecommunication Union |  Geneva, Switzerland | Houlin Zhao | 1865 | ||
| 9 | UNESCO | United Nations Educational, Scientific and Cultural Organization |  Paris, France | 1945 | |||
| 10 | UPU | Universal Postal Union | Bern, Switzerland | Bishar Abdirahman Hussein | 1947 | ||
| 11 | WBG | World Bank Group | Washington, D.C., United States | David Malpass | 1945 | ||
| 12 | WIPO | World Intellectual Property Organization | Geneva, Switzerland | Daren Tang | 1974 | ||
| 13 | WMO | World Meteorological Organization | 1950 | ||||
| 14 | UNWTO | United Nations World Tourism Organization |  Madrid, Spain | 1974 | |||
| 15 | UNODC | United Nations Office on Drugs and Crime | Vienna, Austria | 1997 | |||
| 16 | WHO | World Health Organization | Geneva, Switzerland | 1948 | to promote mental and physical health of humanity | ||
| 17 | UNHCR | Office of United Nations High Commissioner for Refugees | 1950 | ||||
| 18 | UNIDO | United Nations Industrial Development Organization | Vienna, Austria | Li Yong | 1966 | Industrial development for poverty reduction, inclusive globalization and environmental sustainability |
The United Nations Secretariat carries out the day-to-day work of the Organization. It services the other principal organs of the United Nations and administers the programmes and policies laid down by them. At its head is the Secretary-General, who is appointed by the General Assembly. The Secretariat administers a number of notable Offices and Departments.
| Comment | ||||||
| 1 | UNOCHA | Office for the Coordination of Humanitarian Affairs | New York City, United States | Martin Griffiths | 1991 | |
| 2 | UNOOSA | United Nations Office for Outer Space Affairs | Vienna, Austria | 1958 | ||
| 3 | UNODA | United Nations Office for Disarmament Affairs | 1998 | |||
The United Nations maintains, administers or has a working relationship with a number of organisations dedicated to the administration of a variety of international treaties and conventions. At times these perform specific administrative functions while also providing a specific forum for discussing issues around a particular treaty. The organisations themselves generally report to the member states of the treaty rather than to the General Assembly.
| Comment | |||||||
| 1 | ISA | International Seabed Authority | 1994 | ||||
| 2 | CTBTO | Comprehensive Nuclear-Test-Ban Treaty Organization | Vienna, Austria | 1997 (preparatory commission) | Provisional organisation | ||
| 3 | OPCW | Organisation for the Prohibition of Chemical Weapons |  The Hague, Netherlands | 1997 | Related organisation |
There are only five officially recognised training bodies of the United Nations System. Irrespective of what does or does not constitute a United Nations organization, many other institutions serve a research or training purpose, and some are part of other organisations and funds. These are also contained below.
| Comment | |||||||
| 1 | UNIDIR | United Nations Institute for Disarmament Research | Geneva, Switzerland | 1980 | |||
| 2 | UNU | United Nations University |  Tokyo, Japan | 1969 | |||
| 3 | UNITAR | United Nations Institute for Training and Research | Geneva, Switzerland | 1965 | |||
| 4 | UNRISD | United Nations Research Institute For Social Development | 1963 | ||||
| 5 | UNICRI | United Nations Interregional Crime and Justice Research Institute | Turin, Italy | 1968 | |||
| 6 | UNSSC | United Nations System Staff College | 2002 | ||||
| 7 | UPEACE | University for Peace |  San José, Costa Rica | 1980 | UN mandated | ||
| 8 | ICTP | International Centre for Theoretical Physics | Trieste, Italy | 1964 | IAEA, UNESCO, Italian Govt | ||
| 9 | IRC | Innocenti Research Centre - International Child Development Centre | Florence, Italy | 1988 | Part of UNICEF | ||
| 10 | ITCILO | International Training Centre of the ILO | Turin, Italy | 1964 [1] |
The following entities were established by the General Assembly.
| Acronym | Agency | Headquarters | Head | Established | Comment | |
|---|---|---|---|---|---|---|
| ICSC | International Civil Service Commission | New York City, United States | Larbi Djacta[2] | 1975 | ||
| ACPAQ | Advisory Committee on Post Adjustment Questions | New York City, United States | Aldo Mantovani[3] | Part of ICSC |
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