| Specialized organisations and agencies of the United Nations | ||||
| No. | Acronyms | Agency | Headquarters | Established |
| 1 | FAO | Food and Agriculture Organization | Italy Rome, Italy | 1946 |
| 2 | IAEA | International Atomic Energy Agency | Austria Vienna, Austria | 1957 |
| 3 | ICAO | International Civil Aviation Organization | Canada Montreal, Quebec, Canada | 1947 |
| 4 | IFAD | International Fund for Agricultural Development | Italy Rome, Italy | 1977 |
| 5 | ILO | International Labour Organization | Switzerland Geneva, Switzerland | 1919 |
| 6 | IMO | International Maritime Organization | United Kingdom London, United Kingdom | 1948 |
| 7 | IMF | International Monetary Fund | United States Washington, D.C., United States | 1945 |
| 8 | ITU | International Telecommunication Union | Switzerland Geneva, Switzerland | 1865 |
| 9 | UNESCO | United Nations Educational, Scientific and Cultural Organization | France Paris, France | 1945 |
| 10 | UPU | Universal Postal Union | Switzerland Bern, Switzerland | 1947 |
| 11 | WBG | World Bank Group | United States Washington, D.C., United States | 1945 |
| 12 | WIPO | World Intellectual Property Organization | Switzerland Geneva, Switzerland | 1974 |
| 13 | WMO | World Meteorological Organization | Switzerland Geneva, Switzerland | 1950 |
| 14 | UNWTO | United Nations World Tourism Organization | Spain Madrid, Spain | 1974 |
| 15 | UNODC | United Nations Office on Drugs and Crime | Austria Vienna, Austria | 1997 |
| 16 | WHO | World Health Organization | Switzerland Geneva, Switzerland | 1948 |
| 17 | UNHCR | Office of United Nations High Commissioner for Refugees | Switzerland Geneva, Switzerland | 1950 |
