The Ontario Matron Stakes is a Canadian Thoroughbred horse race run annually at Woodbine Racetrack in Toronto, Ontario. Held during the third week of July, it is open to fillies and mares, age three and older. A grade 3 event, raced over a distance of 11/16 miles on Polytrack synthetic dirt, the race currently offers a purse of $150,000 with an addition $50,000 for Ontario bred horses from the Ontario Thoroughbred Improvement Program (T.I.P.). The Ontario Matron Stakes was first run in 1979. Until 2006 it was known as the Ontario Matron Handicap.
| Stakes Race | Grade | Purse |
|---|---|---|
| Eclipse Stakes | III | $150,000 |
| Nassau Stakes | II | $300,000 |
| King Edward Stakes | II | $250,000 |
| Highlander Stakes | II | $200,000 |
| Singspiel Stakes | III | $150,000 |
| Queen's Plate Stakes | I | $1,000,000 |
| Dominion Day Stakes | III | $200,000 |
| Dance Smartly Stakes | II | $300,000 |
| Ontario Matron Stakes | III | $150,000 |
| Nijinsky Stakes | II | $300,000 |
| Royal North Stakes | III | $150,000 |
| Sky Classic Stakes | II | $250,000 |
| Ontario Colleen Stakes | III | $150,000 |
| Play the King Stakes | II | $200,000 |
| Seaway Stakes | III | $150,000 |
| Natalma Stakes | III | $200,000 |
| Summer Stakes | III | $250,000 |
| Canadian Stakes | II | $300,000 |
| Northern Dancer Turf Stakes | I | $500,000 |
| Woodbine Mile Stakes | I | $1,000,000 |
| Selene Stakes | III | $250,000 |
| Grey Stakes | III | $200,000 |
| Nearctic Stakes | I | $500,000 |
| E.P. Taylor Stakes | I | $1,000,000 |
| Canadian International Stakes | I | $1,500,000 |
| Autumn Stakes | II | $150,000 |
| Kennedy Road Stakes | III | $150,000 |
| Bessarabian Stakes | III | $150,000 |
| Valedictory Stakes | III | $150,000 |
