HMAS Murchison (K442/F442) was a Modified River or Bay-class frigate of the Royal Australian Navy (RAN).

Murchison was one of four Bay-class frigates constructed in Australia during World War II, being laid down by Evans Deakin & Company, Brisbane on 3 June 1943.

[1] Completed too late in the war to take part in the fighting, Murchison began her career by visiting Morotai, Ternate, and the Celebes for surveillance duties and War Graves Commission tasks, before sailing to Japan and joining the British Commonwealth Occupation Force.

Four sailors were wounded in the encounter, while Murchison destroyed a number of Chinese gun positions.

[3][4] On 3 October 1952, Murchison was present of the Montebello Islands for the Operation Hurricane nuclear weapons test.