The High Commissioner for Palestine was the highest ranking authority representing the United Kingdom in the mandated territories of Palestine and Transjordan under the British Mandate for Palestine. In 1928, a separate post of High Commissioner for Trans-Jordan, the holder of which was responsible for overseeing Transjordan, was created; however, this post was always held simultaneously by the High Commissioner for Palestine.
They were based in Jerusalem. The office commenced on 1 July 1920, before the commencement of the Mandate on 29 September 1923, and replaced the British military occupation under the Occupied Enemy Territory Administration, which had operated in Palestine in 1917–1918. The office ceased with the expiration of the Mandate on 15 May 1948.