HMS Cossack was a British destroyer of the Royal Navy launched in 1944. She was part of the C-class of destroyers and played a significant role during World War II. Known for her speed and agility, she was equipped with advanced weaponry for her time, including torpedoes and anti-aircraft guns. Throughout her service, HMS Cossack participated in various naval operations, including escorting convoys and engaging enemy ships. She gained fame for her involvement in the Battle of the Atlantic and was recognized for her contributions to the war effort before being decommissioned in 1957.