At least six vessels of the British Royal Navy have been named HMS Decoy.
, the name vessel for her three-vessel class of cutter; the French captured her in 1814 , a broken up in 1869 at Haslar , a gunboat launched in 1871 and sold in 1885. , a torpedo boat destroyer launched in 1894 and sunk in a collision in 1904. , a D-class destroyer launched in 1932 and transferred to the Royal Canadian Navy in 1943 as , then broken up in 1946. Decoy, a destroyer ordered in 1945, the order being canceled January 1946 , a destroyer launched in 1949 and sold to the Peruvian Navy in 1970 as , decommissioned in 2007. She was originally to have been named Dragon.