The Seaway Stakes is a Thoroughbred horse race run annually in late August or early September at Woodbine Racetrack in Toronto, Ontario, Canada.
A Grade III race since 2004, it is open to fillies and mares aged three and older.
Contested over a distance of 7 furlongs on Tapeta synthetic dirt, it carries a purse of Can$150,000.
In 1984 it was run in two divisions.
Inaugurated in 1956, over the years the race has been contested at various distances: Speed record: (Through 1998, times were recorded in fifths of a second .