Mac's Imp (12 February 1988 – 1996) was an American-bred, British-trained Thoroughbred racehorse and sire. As a two-year-old in 1990 he was one of the most successful colts of his generation in Europe, winning six of his eight races including the Coventry Stakes, Richmond Stakes and Phoenix Stakes. He failed to reproduce his juvenile form in two starts as a three-year-old and was retired from racing to become a breeding stallion. He had modest success as a sire of winners but was gelded in 1995 and died a year later.