HMS Ascension (K502) was a Colony-class frigate of the United Kingdom that served in the Royal Navy during World War II.

Transferred to the United Kingdom under Lend-Lease on 24 November 1943, the ship served in the Royal Navy as HMS Ascension (K502) on patrol and escort duty.

On 25 November 1944 she sank the German submarine U-482 with depth charges in the North Atlantic Ocean west of the Shetland Islands at 60°18′00″N 004°52′00″W / 60.30000°N 4.86667°W / 60.30000; -4.86667.

[1] On 14 March 1945, Ascension led a Royal Navy hunter-killer group to the scene of an attack by the South African Navy frigate HMSAS Natal on the German submarine U-714 off St. Abbs, Scotland, which had brought oil and a metal tank to the surface at 55°57′00″N 001°57′00″W / 55.95000°N 1.95000°W / 55.95000; -1.95000 ("U-714 sunk").

While Natal proceeded to Scapa Flow in the Orkney Islands, Ascension's group depth-charged the position, bringing more flotsam from the submarine to the surface.