HMS Cossack (F04) was a British Royal Navy destroyer launched in 1944. She was part of the C-class of destroyers and served during the latter part of World War II. Cossack was known for her speed and agility, making her effective in various naval operations. After the war, Cossack continued to serve in the Royal Navy until she was decommissioned in 1972. Throughout her service, she participated in numerous exercises and operations, contributing to the defense of the United Kingdom and its interests during the Cold War era.