Specialized Agencies are mentioned in the Charter in
There are 17* Specialized Agencies:
UN specialized agencies are international organizations working with the UN, in accordance with relationship agreements between each organization and the UN.
Specialized Agencies each have a process for admitting members and appointing their administrative head.
Article 58 of the Charter states that the UN will make "recommendations for the co-ordination of the policies and activities of the specialized agencies". Coordination is facilitated through ECOSOC and the Chief Executives Board (CEB).
*Note: Reference is sometimes made to 15 Specialized Agencies because the World Bank Group, which is now treated as one organization, is composed, in part, of three Specialized Agencies.