Lloyd Duffy (born December 8, 1944 in Charlottetown, Prince Edward Island) is a retired Canadian Champion jockey in Thoroughbred flat horse racing who uniquely is also a licensed driver of harness racing horses. As a teenager, Duffy began attending harness racing events at a racetrack near his home. He left school to go to work for a local stable and eventually made his way to Toronto, Ontario where he was introduced to Thoroughbred racing.