The second HMS Fitzroy (K553) was a British Captain-class frigate of the Royal Navy in commission during World War II.

The ship was laid down as the unnamed U.S. Navy destroyer escort DE-88 by Bethlehem-Hingham Shipyard, Inc., in Hingham, Massachusetts, on 24 August 1943 and launched on 1 September 1943.

[2] Commissioned into service in the Royal Navy as the frigate HMS Fitzroy (K553) on 16 October 1943 simultaneously with her transfer, the ship served on patrol and escort duty.

On 27 March 1945 she joined the British frigates HMS Byron (K508) and HMS Redmill (K554) in sinking with depth charges the German submarine U-722 in the North Atlantic Ocean near the Hebrides at 57°09′00″N 006°55′00″W / 57.15000°N 6.91667°W / 57.15000; -6.91667 (U-722 sunk).

On 8 April 1945 she joined Byron in a depth-charge attack which sank the German submarine U-1001 in the North Atlantic south-west of Land's End, England, at 49°19′00″N 010°23′00″W / 49.31667°N 10.38333°W / 49.31667; -10.38333 (U-1001 sunk).