List of Ontario provincial highways
List of highways
| Number | From | To | Length (km)[1] | (mi) | Formed | Eliminated |
|---|---|---|---|---|---|---|
| Highway 2 | Hwy 401 near Gananoque | Gananoque | ||||
| Highway 3 | Fort Erie Hwy 77 near Leamington |
Hwy 4 near St. Thomas Windsor | ||||
| Highway 4 | Hwy 3 near St. Thomas | Hwy 8 in Clinton | ||||
| Highway 5 | Hwy 6 near Waterdown | Hwy 8/Hwy 52 near Dundas | ||||
| Highway 6 | Port Dover | Hwy 17 near Espanola | ||||
| Highway 7 | Hwy 417 near Ottawa Brampton |
Hwy 48 in Markham Hwy 4 near London | ||||
| Highway 7A | Hwy 115 near Peterborough | Hwy 7/Hwy 12 near Port Perry | ||||
| Highway 8 | Hwy 5/Hwy 52 near Dundas | Hwy 21 in Goderich | ||||
| Highway 9 | Hwy 400 in Newmarket Hwy 23/Hwy 89 in Harriston |
Hwy 10 in Orangeville Hwy 21 in Kincardine | ||||
| Highway 10 | Brampton | Hwy 6/Hwy 21/Hwy 26 in Owen Sound |