HMS Thornborough (K574), sometimes spelled Thornbrough,[5] was a British Captain-class frigate of the Royal Navy in commission during World War II.

Originally constructed as a United States Navy Buckley class destroyer escort, the ship served in the Royal Navy from 1943 to 1945.

The ship was laid down as the unnamed U.S. Navy destroyer escort DE-565 by Bethlehem-Hingham Shipyard, Inc., in Hingham, Massachusetts, on 22 September 1943 and launched on 13 November 1943.

[1] Commissioned into service in the Royal Navy as the frigate HMS Thornborough (K574) on 31 December 1943 simultaneously with her transfer, the ship served on patrol and escort duty for the remainder of World War II.

[1] The United States sold Thornborough on 24 April 1947 to a shipbuilding firm in Greece for scrapping.