David Andrew Hayes (born 22 October 1962) is an Australian Thoroughbred racehorse trainer who has trained a total of 93 Group One winners, (76 in Australia, 17 in Hong Kong and one in Japan) including winners of the Melbourne Cup, Cox Plate, Caulfield Cup and Golden Slipper.
Hayes became the youngest member to be admitted into the Australian Racing Hall of Fame in 2008.
He has trained in excess of 4,000 winners.He is the son of the trainer Colin Hayes.