John P. Loftus (October 13, 1895 – March 23, 1976) was an American thoroughbred horse racing Hall of Fame jockey.Born in Chicago, Illinois, Johnny Loftus was the first jockey to win the United States Triple Crown of Thoroughbred Racing. During his career, between 1909 and 1919, he won 580 races out of the 2,449 he competed in, for a very notable 23.7% success rate. In 1916 he won the Travers Stakes and Withers Stakes on "Spur" then captured the Kentucky Derby aboard George Smith.