Master Willie (12 April 1977 – October 2001) was a British racehorse and sire. As a three-year-old in 1980 he finished second in the Epsom Derby and won the Group One Benson and Hedges Gold Cup. In the following year he added victories in the Coronation Cup and Eclipse Stakes before being retired to stud. He stood as a breeding stallion in the United States, the United Kingdom and Germany with mixed results before his death in 2001.