The Ontario Derby is a Canadian Thoroughbred horse race run annually in mid-October at Woodbine Racetrack in Toronto, Ontario. A Grade III stakes since 2012, it is open to three-year-old horses. Raced over a distance of 1 1/8 miles (9 furlongs) on Tapeta, the Ontario Derby currently offers a purse of Can$150,000. Inaugurated in 1972 as the Colonel R. S. McLaughlin Handicap, the race was renamed the Ontario Derby for the 2003 running. Originally contested at 1 3/16 miles, it was changed to its current 1 1/8-mile distance in 1992.

Records

Speed record: (Through 1998, times were recorded in fifths of a second. Since 1999 they are in hundredths of a second) Most wins by an owner: Most wins by a jockey: Most wins by a trainer:

Winners of the Ontario Derby

Notes: 1In 1996, Steady Climb finished first but was disqualified and placed second. 2In 2023, Solo Album finished first but was disqualified and placed fifth for interference in the first turn.