Never Say Die (1951–1975) was an American-bred, British-trained Thoroughbred racehorse. After winning only once from his first nine races, he demonstrated much improved form in the summer of 1954 to win the Derby, becoming the first American-bred colt to win the race in 73 years. Later that year he added a second British Classic, when winning the St. Leger Stakes by a record margin of twelve lengths. He was later retired to a successful stud career.