Western Samoa Trust Territory was the official name of Western Samoa between the end of German rule in 1920 and its gaining independence in 1962.
The territory was a League of Nations mandate of the United Kingdom from 1920 until 1946. In 1946, the territory became a United Nations Trust Territory and with the agreement of the United Kingdom was placed under the jurisdiction of New Zealand. New Zealand was asked by the UN to administer the territory with the ultimate goal of decolonisation and self-determination. This process came to an end in 1962 with the independence of Western Samoa.