Grant E. "Gene" Riegle (June 3, 1928 – October 17, 2011) was an American harness racing driver and trainer. He was inducted into the Harness Racing Hall of Fame in 1992.^[2]

Riegle started his harness racing career in 1950.^[3] His father, Roy Riegle, was also a driver and trainer. Roy Riegle and his wife were killed in a 1957 auto accident.^[4]

At the 1972 Little Brown Jug, Riegle drove Jay Time who was the odds on favorite before the race.^[5] Jay Time, who finished in a dead heat with Strike Out one month earlier in the Adios Pace,^[6] was scratched after the first heat due to a high temperature.^[7]

During the 1981 Woodrow Wilson Pace held at Meadowlands Raceway, Riegle was thrown from his sulky while driving Andre Hanover in the process of trying to avoid a fallen horse. He suffered minor abrasions.^[8] 1992 Harness racing horse of the year, Artsplace, was trained by Riegle.^[9]

In 1990, Riegle along with Bruce Nickells, were awarded the Glen Garnsey Trophy as United States Trainer of the Year.^[10]

Riegle trained 1993 Little Brown Jug winner, Life Sign.^[11]

Riegle died at his Greenville, Ohio home on October 17, 2011.^[12]