Transworld (26 February 1974 – 24 June 2001) was an American-bred, Irish-trained Thoroughbred racehorse and sire. Bred in Kentucky he was sent to race in Europe after being sold for $375,000 as a yearling. His brief racing career comprised only five races between May and September 1977 but he showed himself to be a high-class staying colt with wins in the Churchill Stakes, Ulster Derby and Irish St. Leger. He returned to America his stud career and had some success as a breeding stallion. Transworld died in 2001 at the age of 27.