Tracery (1909–1924) was an American-bred, British-trained Thoroughbred racehorse and sire, best known for winning the St. Leger Stakes in 1912. In a career which lasted from June 1912 until October 1913 he ran nine times and won six races. After finishing third on his debut in the 1912 Epsom Derby Tracery never lost another completed race at level weights. He won the St. James's Palace Stakes, Sussex Stakes and St. Leger Stakes in 1912 and the Eclipse Stakes and Champion Stakes as a four-year-old in 1913. He was brought down by a protester in the 1913 Ascot Gold Cup. After his retirement from racing he became a highly successful breeding stallion in Britain and Argentina.