"Lefty" Nickerson (December 25, 1928 – March 26, 2004) was an American Thoroughbred horse racing trainer.
He embarked on a career as a professional trainer in 1953, working primarily at racetracks in the Northeastern United States.
During his career, Lefty Nickerson conditioned Thoroughbreds for owners such as Harbor View Farm, Maxwell Henry Gluck of Elmendorf Farm, Pam & Martin Wygod, and Sam and Dorothy Rubin of Dotsam Stable.
A mentor to future National Museum of Racing and Hall of Fame inductee, Ron McAnally, when the Rubins decided to send the gelding to race in California, Nickerson recommended Ron McAnally.
However, on John Henry's trips back to New York to race, Nickerson would be the trainer of record.