The United Nations itself has six principal organs established by the Charter of the United Nations:
General Assembly
The United Nations General Assembly (UNGA/GA) consists of … 展开

The separately administered funds and programmes, research and training institutes, and other subsidiary bodies are autonomous subsidiary … 展开

Some organizations have a relationship with the UN defined by an arrangement different from the agreements between the specialized agencies and … 展开

The United Nations, its subsidiary bodies, thirteen of the specialized agencies (ILO, FAO, UNESCO, WHO, ICAO, UPU, ITU, WMO, IMO, WIPO, IFAD, UNIDO, and UNWTO), and one related … 展开

The specialized agencies are autonomous organizations working with the United Nations and each other through the co-ordinating machinery of the Economic and Social Council and the Chief Executives Board for Coordination. Each was integrated into the UN … 展开

The United Nations Chief Executives' Board for Coordination (CEB) brings together on a regular basis the executive heads of the organizations of the United Nations System, under the chairmanship of the secretary-general of the UN. The CEB aims to further co … 展开

• League of Nations for a rudimentary model on which the UN System is based
• List of United Nations organizations by location
• Member states of the United Nations 展开