Knock Hard (foaled 1944) was an Irish Thoroughbred racehorse who won the 1953 Cheltenham Gold Cup. He showed good form on the flat, winning the Irish Lincoln Handicap and finished second in the Irish Cesarewitch and the November Handicap. As a steeplechaser he was a fast but unreliable jumper who fell when well fancied in both the King George VI Chase and the Cheltenham Gold Cup in the 1951/52 National Hunt season. In the following year his early form was inconsistent but he then won the Great Yorkshire Chase before defeating a strong field in the Gold Cup. His subsequent form deteriorated and he was retired to become a hunter in England.