| International Telecommunication Union (ITU) | 01/07/1908 | www.itu.int |
| World Health Organisation (WHO) | 08/07/1948 | www.who.int |
| United Nations Educational, Scientific and Cultural Organisation | 06/07/1949 | www.unesco.org |
| Universal Postal Union (UPU) | 19/09/1955 | www.upu.int |
| International Atomic Energy Agency (IAEA) | 12/10/1957 | www.iaea.org |
| World Intellectual Property Organisation (WIPO) | 03/03/1975 | www.wipo.org |
| International Civil Aviation Organisation (ICAO) | 06/02/1980 | www.icao.int |
| International Maritime Organisation (IMO) | 22/12/1989 | www.imo.org |
| Organisation for the Prohibition of Chemical Weapons (OPCW) | 01/06/1995 | www.opcw.org |
| World Meteorological Organisation (WMO) | 09/05/1996 | www.wmo.ch |
| Preparatory Commission for the Nuclear-Test-Ban Treaty Organisation (CTBTO) | 18/12/1998 | www.ctbto.org |
| World Tourism Organisation (UNWTO) | 01/01/2001 | www.world-tourism.org |
| Food and Agriculture Organisation (FAO) | 02/11/2001 | www.fao.org |