Richard E. "Dick" Dutrow Sr. (March 8, 1937 – February 19, 1999) was an American Thoroughbred racehorse trainer.
Dutrow, along with King T. Leatherbury, John J. Tammaro Jr. and Hall of Fame inductee Bud Delp, were known as Maryland racing's "Big Four".
Living in Hagerstown, Maryland, where his son Richard Jr. was born in 1959, his success at the small half-mile track in his hometown plus at others in such places as Bel Air, Upper Marlboro and Cumberland as well as at Waterford Park in Chester, West Virginia led to his moving to the larger tracks on the Maryland racing circuit.
For many years Dutrow concentrated on making a living through winning as many races as possible through his astute horse selection and his training methods.
Although Richard E. Dutrow Sr. died in 1999, as at April 2010 he remains in the all-time top fifteen in career wins by trainers.