Richard Michael Hannon (born 1945), known as Richard Hannon Sr.
to distinguish him from his son, is a former British horse trainer.
He was British flat racing Champion Trainer four times, achieved more than a century of victories in a season 20 times, a double century five times, and turned out 32 Royal Ascot winners.
He operated out of Herridge Racing Stables, near Marlborough, Wiltshire, with a smaller yard at Everleigh on the edge of Salisbury Plain.
He retired after winning a final trainers' championship at the end of 2013, when the training operation was taken over by his son, Richard Hannon, Jr.