List of Ontario provincial highways

List of highways

• Primary Roads

• Ontario provincial highway 2 - Tyendinaga Indian Reserve at Ontario provincial highway 49 and Hastings County Highway 2 to Marysville, Ontario at Ontario provincial highway 49 and Hastings County Highway 2
• Ontario provincial highway 3 - Windsor at the Ambassador Bridge over the Detroit River at the USA-Canada border to Junction Ontario Provincial Highway 77 and Essex County Highway 33 north of Leamington; and Junction Ontario Provincial Highway 4 and Elgin County Highway 4, and Elgin County Highway 3 at Talbotville Royal northwest of St. Thomas to Junction Cement Rd. and Niagara Regional Highway 3 west of Port Colborne; and Junction Ontario Provincial Highway 140 and Niagara Regional Highway 3 at Port Colborne to Junction Rose Hill Rd. and Niagara Regional Highway 3 west of Fort Erie
• Ontario provincial highway 4 - St. Thomas to Clinton
• Ontario provincial highway 5 - Peters Corners to Clappison's Corners
• Ontario provincial highway 6 - Port Dover to Espanola, connects to the Trans-Canada Highway via ferry, from Tobermory to South Baymouth.
• Ontario provincial highway 7 - ON-4 at Lucan to Heart Lake Road in Brampton, and from Pickering, to ON-417, at Stittsville.
• Ontario provincial highway 7A - Manchester (suburban Toronto) to Peterborough.
• Ontario provincial highway 8 - Peters Corners to Cambridge, and Kitchener to Goderich.
• Ontario provincial highway 9 - Kincardine to Harriston and from Orangeville to Davis Drive Interchange, near Pottageville.
• Ontario provincial highway 10 - Brampton to Owen Sound.
• Ontario provincial highway 11 - Yonge Street, NE of Barrie to Rainy River, it's the Trans-Canada Highway from North Bay west.
• Ontario provincial highway 12 - Brooklin to Midland.
• Ontario provincial highway 15 - Kingston to Carleton Place
• Ontario provincial highway 16 - Highway 416 to Johnstown where it connects to a bridge to Ogdensburg, New York.
• Ontario provincial highway 17 - Arnprior west to the Manitoba border west of Kenora, the Trans-Canada Highway.
• Ontario Provincial highway 19 - Tilsonburg to Ingersoll
• Ontario Provincial highway 20 - Allanburg to Niagara Falls
• Ontario Provincial highway 21 - Highway #402 near Forest to Owen Sound.
• Ontario Provincial highway 23 - Lucan to Harriston
• Ontario Provincial highway 24 - Simcoe to south of Cambridge, known as King George Boulevard north of Brantford.
• Ontario provincial highway 26 - Owen Sound to Bayfield Street in Barrie.
• Ontario provincial highway 28 - east of Peterborough to Bancroft.
• Ontario provincial highway 33 - Picton to Kingston
• Ontario provincial highway 35 - Macdonald-Cartier Freeway (former Bowmanville-Clarke line) to the Haliburton area.
• Ontario provincial highway 48 - Markham Road in Markham, Ontario to ON-12 east of Beaverton, Ontario.
• Ontario provincial highway 58 - Thorold junction, Saint David's Drive Interchange, to Lundy's Lane in Niagara Falls.
• Ontario provincial highway 61 - counterpart of US61, US61 to Thunder Bay.
• Ontario provincial highway 62 - Picton, Ontario to Bancroft
• Ontario provincial highway 67 - ON-101, E of Timmins to Iroquois Falls.
• Ontario provincial highway 69 - originally north of Coldwater, now extends from Parry Sound to the Trans-Canada Highway near Sudbury.
• Ontario provincial highway 71 - International Falls to Kenora, part of the Trans-Canada Highway
• Ontario provincial highway 85
• Ontario provincial highway 101 - Wawa to the Ontario-Quebec Border north of New Liskeard.
• Ontario provincial highway 115 - Macdonald-Cartier Freeway (former Bowmanville-Clarke boundary) to The Parkway Interchange.
• Ontario provincial highway 140 - Chippawa Road (Port Colborne) to East Main Street (east of Welland, Ontario).

There are no highways having the numbers 1, 13,

Secondary Roads

• Ontario provincial no. 518

Defunct Highways

• The King's Highway 2, Windsor to the Ontario-Quebec boundary, now Lakeshore Blvd., Kingston Road, Toronto Road, and Loyalist Road.
• The King's Highway 2A (Windsor), Highway 2 Junction in Windsor to Highway 2 Junction in Tilbury. Existed from 1929 to 1938
• The King's Highway 2A (Toronto), Highway 2 Junction in Scarborough to Highway 401 Junction in Scarborough. Existed from 1947 to 1998
• The King's Highway 2Alt (London), Highways 2&4 Junction in London to Highways 2&126 Junction in London. Existed from 1956 to 1968
• The King's Highway 2Alt (Chatham), Highway 2 Junction in Chatham to Highway 2 Junction in Chatham. Existed from 1957 to 1961
• The King's Highway 2Alt (Cornwall), Highway 2 Junction in Cornwall to Highway 2 Junction in Cornwall. Existed from 1965 to 1967
• The King's Highway 2B, Highway 2 Junction in Chatham to Highway 2 Junction in Chatham. Existed from 1961 to 1970
• The King's Highway 2S, Highway 2 Junction in Gananoque to Highway 401 Junction west of Brockville. Existed from 1939 to 1952 & 1967 to 1970
• The King's Highway 3 Port Colborne and probably west of ON-40
• The King's Highway 3A (Niagara), Highway 3 junction at Chambers Corners to Highway 58 junction in Welland. Existed from 1927 to 1970
• The King's Highway 3A (Windsor), Windsor-Detroit Tunnel to Highway 3 junction at Oliver. Existed from 1929 to 1935
• The King's Highway 3B (Maidstone), Highway 3 junction in Maidstone to Highway 2A junction in Maidstone. Existed from 1931to 1938
• The King's Highway 3B (Windsor), Windsor-Detroit Tunnel to Highway 401 junction at Windsor. Existed from 1935 to 1998
• The King's Highway 3B (Tilsonburg), Highway 3 junction west of Tillsonburg to Highway 3 junction in Tillsonburg. Existed from 1973 to 1977
• The King's Highway 3C, Ridgeway/Crystal Beach to Highway 3 junction in Fort Erie. Existed from 1934 to 1970
• The King's Highway 5, now Dundas Street, Bloor Street and Danforth Avenue.
• The King's Highway 11A, Gardiner Expressway/Lakeshore Boulevard to Macdonald-Cartier Freeway (ON-401) now, York Street then University Avenue, then Avenue Road, and Oriole Parkway
• The King's Highway 11B (Cobalt-New Liskeard)
• The King's Highway 20 QEW E of Hamilton to QEW/ON-420 interchange, now Confederation Parkway, some prefer Rymal Road, and Lundy's Lane.
• The King's Highway 22
• The King's Highway 24. 2 km south of Cambridge and northward
• The King's Highway 25, (Oakville (Bronte, suburban Toronto) to north of Grand Valley) now Bronte Road (south of Steeles).
• The King's Highway 27, Etobicoke, Ontario to Midhurst, Ontario
• The King's Highway 28, Port Hope to ON-7A, (which had a joint with ON-115 for 13 km to the Parkway exit), up to NE of Lakefield, at ON-134.
• The King's Highway 29
• The King's Highway 30
• The King's Highway 32
• The King's Highway 51
• The King's Highway 57, Highway 3A junction at Beckett's Bridge to Highway 20 junction at Bismarck. Existed from 1934 to 1970.
• The King's Highway 74, New Sarum to Nilestown. Decomissioned in 1997.
• The King's Highway 88, Highway 27 junction at Bond Head to Highway 11 junction in Bradford. Existed from 1938 to 1988
• The King's Highway 97
• The King's Highway 99, North of Brantford (Hwy. 5) to Ancaster
• The King's Highway 100, MCF (ON-401) at exit??? to Former ON-2, East of London, now as Airport Road
• The King's Highway 103, Highway 400 and 12 to Highway 69 junction, now a freeway.
• The King's Highway 126, MCF (ON-401) S of London, (partially superhighway) to ON-2, some think extended to ON-22, now known as Highbury Avenue
• The King's Highway 128 Redditt to Kenora. Decomissioned in 1975.

400-series roads or freeways can be found here.

See also: List of Canadian highways by province, List of roads and highways

Referenced By