HMS Stayner was a British of the Royal Navy in commission during World War II. Originally constructed as a United States Navy, she served in the Royal Navy from 1943 to 1945.
The ship was laid down as the unnamed U.S. Navy destroyer escort DE-564 by Bethlehem-Hingham Shipyard, Inc., in Hingham, Massachusetts, on 22 September 1943 and launched on 6 November 1943. She was transferred to the United Kingdom upon completion on 30 December 1943.
Commissioned into service in the Royal Navy as the frigate HMS Stayner (K573) on 30 December 1943 simultaneously with her transfer, the ship served on patrol and escort duty. On 5 August 1944, she joined the British destroyer in a depth charge attack which sank the German submarine in the English Channel south of Brighton, England, at 0200 hours at position 50.3833°N 0.1°W. On 19 September 1944 together with, and she engaged Kriegsmarine E-boats, sinking,, and .
The Royal Navy decommissioned Stayner later in 1945 and returned her to the U.S. Navy on 24 November 1945.
The United States sold Stayner on 14 November 1947 for scrapping.