The Colin Stephen Quality Handicap is an Australian Turf Club Group 3 Thoroughbred open quality handicap horse race for horses three years old and older, over a distance of 2400 metres, held annually at Rosehill Racecourse, Sydney, Australia, in September.

[1] The race is named after the former chairman of the Australian Jockey Club Sir Colin Stephen (1872–1937).

Stephen was a solicitor, horse racing administrator, racehorse owner/breeder and polo player.

A committee member from 1912 served on the Sir Adrian Knox sub-committee which framed the rules of racing of that year and as chairman of the Australian Jockey Club from 1919, Stephen was determined to make racing in New South Wales a clean and healthy pastime.

Sir Colin Stephen’s racing colours of Pale blue, white cap were carried to success by the Ascot Vale Stakes winners Fidelity 1936 & Caesar 1937 defeating the champion Ajax.