William Harmatz (February 9, 1931 – January 27, 2011) was an American Thoroughbred horse racing jockey who won the 1959 Preakness Stakes aboard Royal Orbit. The recipient of the George Woolf Memorial Jockey Award in 1960, given to a jockey who demonstrates high standards of personal and professional conduct, on and off the racetrack, Harmatz was Jewish, and was inducted in the International Jewish Sports Hall of Fame in 1999. William Harmatz died at age 79 in 2011 at his home in Vista, California.