The Dominion Day Stakes is a Canadian Thoroughbred horse race run annually in July at Woodbine Racetrack in Toronto, Ontario. A Grade III event currently offering a purse of CAD$150,000 +, it is open to horses aged three years and up. The race was run at a distance of  1 1⁄8 miles from its inception until 1983 when it was changed to its present  1 1⁄4 miles format. It was raced on dirt until 2007 when a polytrack surface was installed. In 2016, the surface was changed to Tapeta synthetic turf. Inaugurated in 1953 at the Old Woodbine Racetrack, it remained there until the track closed in 1955.