Beldale Flutter (foaled 4 April 1978) was an American-bred, British-trained Thoroughbred racehorse and sire. As a two-year-old in 1980 he was rated one of the best horses of his generation after winning three of his five races, most notably a decisive victory over Shergar in the William Hill Futurity. As a three-year-old he won the Dante Stakes and was second favourite for The Derby before sustaining a serious injury in training which kept him off the racecourse for three months. He returned in August to win the Benson and Hedges Gold Cup against older horses. He ran poorly in his two remaining races and was retired to stud, where he had limited success as a sire.