Jonathan E. Sheppard (born December 2, 1940 in Ashwell, Hertfordshire, England) is a Hall of Fame trainer in American Thoroughbred horse racing.Sheppard came to the United States in 1961 and in 1966 won his first race with Haffaday in a steeplechase event at My Lady's Manor, Maryland. In 1973 he won his first earnings championship in steeplechase racing. He went on to win the earnings title another twenty-three times.