Ace Admiral (foaled in 1945) was an American Thoroughbred racehorse. His sire, Heliopolis, was the leading sire in North America in 1950 and again in 1954. His grandsire, Hyperion, was a six-time leading sire in Great Britain & Ireland. His dam, War Flower, was a daughter of Man o' War.Ace Admiral was born in the same year as the great Calumet Farm colts Citation and Coaltown. In his two-year-old season, Ace Admiral ran third to Citation in the Pimlico Futurity.