Gregson (August 7, 1938 – June 4, 2000) was an American Thoroughbred racehorse trainer.
He was the trainer of Gato Del Sol who won the 1982 Kentucky Derby.
He died on June 4, 2000, of a self-inflicted gunshot wound.
In his honor, a charitable institution founded by the association of California Thoroughbred Trainers (CTT) designed to "enhance the quality of life of California's backstretch workers and their families" was renamed the Edwin J.