Cleopatra (foaled 1917 in Kentucky) was an American Champion Thoroughbred racehorse. The filly's sire was Corcyra, a son of three-time the Leading sire in Great Britain and Ireland Polymelus. Her dam was Gallice, a daughter of Gallinule. Cleopatra is probably best remembered for her easy victory in the second running of the Pimlico Oaks on May 17, 1920.