Turkhan (1937 – after 1952) was a British Thoroughbred racehorse and sire, who raced during World War II and was best known for winning the classic St Leger in 1940. He showed good form as a two-year-old, winning the Coventry Stakes at Royal Ascot. In the following year he finished second in the rescheduled New Derby and won the Irish Derby before taking a substitute Yorkshire St Leger at Thirsk Racecourse in November.