Established to supervise the administration of Trust Territories placed under the International Trusteeship System. Suspended operations on 1 November 1994 after Palau — the last Trust Territory — achieved independence.
| Territory | Administering Authority | Status | Independence |
|---|---|---|---|
| Republic of Palau | United States | Independent | 1994 |
| Federated States of Micronesia | United States | Independent | 1986 |
| Republic of Marshall Islands | United States | Independent | 1986 |
| Northern Mariana Islands | United States | Commonwealth (US) | 1986 |
| British Togoland | United Kingdom | Merged → Ghana | 1957 |
| French Togoland | France | Independent → Togo | 1960 |
| British Cameroons | United Kingdom | Merged → Cameroon/Nigeria | 1961 |
| French Cameroun | France | Independent → Cameroon | 1960 |
| Tanganyika | United Kingdom | Independent → Tanzania | 1961 |
| Ruanda-Urundi | Belgium | Rwanda & Burundi | 1962 |
| Nauru | Australia | Independent | 1968 |