HMS Starling, pennant number U66, was a Modified Black Swan-class sloop of the Royal Navy.

She was active in the Battle of the Atlantic during the Second World War and was the most successful anti-submarine warfare vessel of the Royal Navy, being credited with the destruction of fourteen U-boats.

Starling was ordered on 18 July 1941 under the 1940 Supplementary War Building Programme; she was laid down by Fairfield Shipbuilding and Engineering Company at Govan, Scotland, on 21 October 1941.

Starlings first success came on 1 June 1943, when the group's first U-boat was detected: fortuitously on a fine day and identified by Lt. Earl Howe Pitt.

On their return to Liverpool, Starling and 2SG were assigned to "Operation Musketry", an attempt, in concert with Coastal Command, to interdict the U-boat transit routes across the Bay of Biscay.

[9] In March 1944, Starling and 2 SG, accompanied by escort carrier Vindex, sought and destroyed U-653, a U-boat on weather-reporting duty in the North Atlantic.

Later that month, while supporting Murmansk convoy JW 58, Starling met and destroyed U-961 in transit to the North Atlantic.

[11][12] In June Starling was part of "Operation Neptune" in support of the Normandy landings, and was instrumental in preventing any attacks on the invasion fleet.

The campaign became a hunt for single raiders operating in the shallow coastal waters, where a U-boat could hide among the wrecks on the sea bottom.

In January 1945 Starling, with ships of 22EG, attacked a promising target in the North Channel: They were credited, following examination of German records in the post-war period, with the destruction of U-482.