The Trillium Stakes is a Canadian Thoroughbred horse race run annually at Woodbine Racetrack in Toronto, Ontario.
Held in June, it is open to fillies and mares, age three and older.
The Trillium Stakes was first run in 2011 and was elevated to Grade III status in 2018.
The first two runnings of the race were over 1+1⁄8 miles before the distance was reduced to 1+1⁄16 in 2013.
The race is run on Woodbine's synthetic dirt track: the surface was Polytrack until 2017 when it was replaced by Tapeta.