Ajdal (2 April 1984 – August 1988) was an American-bred, British-trained Thoroughbred racehorse and sire. He was one of the leading European two-year-old of 1986, when he was unbeaten in three races including the Dewhurst Stakes. In the early part of 1987 he was aimed at the classics but after winning the Craven Stakes on his debut, he was beaten in the 2000 Guineas, Irish 2000 Guineas and Epsom Derby.