HMAS Leeuwin was a shore establishment of the Royal Australian Navy (RAN), located in Fremantle, Western Australia. Commissioned in August 1940 as the naval depot for Fremantle, the base was adopted for use as a training facility after World War II: initially for reservists and national servicemen, then as the Junior Recruit Training Establishment (JRTE) from 1960 until 1984. Decommissioned from naval service in 1986, the base was later reopened under the control of the Australian Army as Leeuwin Barracks.