Spearmint (1903–1924) was a British Thoroughbred racehorse and a sire. In a brief racing career which lasted from 1905 until June 1906, he ran five times and won three races. After showing moderate form in 1905, he won The Derby on his seasonal debut at age three and then became the first British horse for twenty years to win France's most important race, the Grand Prix de Paris. He became a successful breeding stallion, siring major winners in Europe and the United States. His daughters produced the winners of eight classic races. Spearmint was placed on the winning sires and brood-mare sires lists on several occasions.

The Derby Stakes, also known as the Derby or the Epsom Derby, is a Group 1 flat horse race in England open to three-year-old colts and fillies. It is run at Epsom Downs Racecourse in Surrey on the first Saturday of June each year, over a distance of one mile, four furlongs and 10 yards, or about 1½ miles. It was first run in 1780.