List of Ontario provincial highways

Although all roads in the provincial highway network are legally part of the King's Highway,^[3]the term is primarily associated with the highways numbered 2 through 148, the 400-series highways and the Queen Elizabeth Way.

Number	Length (km)[2]	Length (mi)	Southern or western terminus	Northern or eastern terminus	Formed	Removed	Notes
Highway 2	1.0	0.62	Highway 401 in Gananoque	Gananoque limits	01917-08-211917[4]	current
Highway 3	258.2	160.4	Ambassador Bridge to I-75 / I-96 in Detroit, Michigan	Rosehill Road in Fort Erie	01920-08-041920[5]	current	Discontinuous between Highway 77 in Leamington and Highway 4 at Tabotville Royal, as well as through Port Colborne
Highway 4	101.6	63.1	Highway 3 – St. Thomas	Highway 8 – Clinton	01920-02-261920[6]	current
Highway 5	14.0	8.7	Highway 8 at Peters Corners	Highway 6 at Clappinson's Corners	01920-06-241920[5]	current	MTO continues to maintain 1.5 km (0.93 mi) of Highway 5 over Highway 407 and Highway 403
Highway 6	472.4	293.5	St. Patrick Street in Port Dover	Highway 17 – McKerrow	01920-06-011920[5]	current
Highway 7	535.7	332.9	Highway 4 – Elginfield	Highway 417 – Ottawa	01920-02-261920[6]	current	Discontinuous between Georgetown and Markham
Highway 7A	48.3	30.0	Highway 7 / Highway 12 near Port Perry	Highway 115 near Peterborough	01933-11-291933[7]	current
Highway 8	159.7	99.2	Highway 21 – Goderich	Highway 5 near Dundas	01918-08-151918[8]	current
Highway 9	119.0	73.9	Highway 21 – Kincardine	Highway 400 (near Newmarket)	01920-02-261920[6]	current	Discontinuous between Harriston and Orangeville
Highway 10	137.3	85.3	Northern terminus of  Highway 410 in Caledon	Highway 21 / Highway 26 – Owen Sound	01920-02-261920[6]	current
Highway 11	1784.9	1,109.1	Highway 400 – Barrie	MN 72 – Baudette, MN	01920-02-261920[6]	current
Highway 11B	6.6	4.1	Highway 11 near Gillies	Temiskaming Shores south limits	01963-01-011963	current	Tri-Town Bypass; not assumed through Cobalt
Highway 11B	3.3	2.1	Highway 11	Zuke Road in Atikokan	01965-06-281965[9]	current	Atikokan Business spur
Highway 12	145.1	90.2	Gatineau hydro corridor south of Brooklin	Highway 93 – Midland	01922-01-141922[10]	current
Highway 15	115.4	71.7	Highway 401 – Kingston	Highway 7 – Carleton Place	01920-10-131920[5]	current
Highway 16	3.6	2.2	NY 812 – Ogdensburg, NY	Highway 416 – Prescott	01918-08-151918[8]	current
Highway 17	1964.0	1,220.4	PTH 1 (TCH) towards Winnipeg	Highway 417 near Arnprior	01920-07-091920[5]	current
Highway 17A	33.3	20.7	Highway 17 west near Keewatin	Highway 17 east near Kenora	01990-11-161990[11]	current	Kenora Bypass
Highway 17B	0.9	0.56	Highway 17	North Bay west limits at Duchesnay Creek bridge	01958-01-011958[12][13]	current	North Bay Business Route
Highway 17B	20.6	12.8	Highway 17 east via Bar River Road	Highway 17 west – Sault Ste. Marie near Kenora	02008-01-012008[14]	current	Garden River
Highway 19	24.1	15.0	Highway 3 in Tillsonburg	Highway 401 near Ingersoll	01930-03-121930[15]	current
Highway 20	1.9	1.2	Highway 58 near Allanburg	Regional Road 70 (Townline Road) – Niagara Falls	01930-03-121930[15]	current
Highway 21	226.8	140.9	Highway 402 near Wyoming	Highway 6 / Highway 10 / Highway 26 in Owen Sound	01927-05-251927[16]	current
Highway 23	37.7	23.4	Highway 7 near Elginfield	Highway 9 / Highway 89 in Harriston	01927-06-221927[16]	current
Highway 24	64.1	39.8	Highway 3 in Simcoe	Cambridge south limits	01927-07-021927[16]	current
Highway 26	118.6	73.7	Highway 6 / Highway 10 / Highway 21 in Owen Sound	Highway 400 in Barrie	01927-07-021927[16]	current
Highway 27	1.6	0.99	Highway 427 south	1.1 km (0.68 mi) south of	01927-09-141927[16]	current
Highway 28	162.6	101.0	Highway 7 near Peterborough	Highway 41 at Denbigh	01928-01-011928[17]	current
Highway 33	60.9	37.8	Highway 62 in Bloomfield	Collins Bay Road in Kingston	01930-07-091930[15]	current
Highway 34	17.8	11.1	Highway 417 near Vankleek Hill	Main Street East / John Street in Hawkesbury	01930-11-261930[15]	current
Highway 35	195.6	121.5	Highway 115 near Peterborough	Highway 60 at Dwight	—	—
Highway 37	44.2	27.5	Highway 401 in Belleville	Highway 7 in Actinolite	01932-01-061932[18]	current
Highway 40	91.4	56.8	Highway 401 in Chatham-Kent	Highway 402 in Sarnia	01934-03-281934[19]	current
Highway 41	160.5	99.7	Highway 7 in Kaladar	Highway 148 (Pembroke Street East) in Pembroke	01935-05-011935[20]	current
Highway 48	65.2	40.5	Major Mackenzie Drive	Highway 12 near Beaverton	01937-03-241937[21]	current
Highway 49	5.8	3.6	Quinte Skyway to Prince Edward County	Tyendinaga Mohawk Territory north limits	01962-02-011962[22]	current
Highway 58	15.5	9.6	Highway 3 in Port Colborne	Highway 406 in Thorold	01935-09-041935[20]	current
Highway 58A	5.1	3.2	Highway 58 in Welland	Highway 140	01974-08-241974	current
Highway 60	255.8	158.9	Highway 11 in Huntsville	Highway 17 in Renfrew	01937-09-221937[21]	current
Highway 61	61.0	37.9	MN 61 towards Grand Marais, MN	Highway 11 / Highway 17 in Thunder Bay	01937-10-061937[21]	current
Highway 62	165.8	103.0	Highway 33 in Bloomfield	Highway 127 at Maynooth	01937-08-111937[21]	current
Highway 63	63.5	39.5	North Bay north limits	R-101 in Témiscaming	01937-08-251937[21]	current
Highway 64	145.0	90.1	Highway 69 at Rutter	Highway 11 in Marten River	01937-08-251937[21]	current
Highway 65	123.3	76.6	Highway 66 near Matachewan	Ontario–Quebec boundary near Notre-Dame-du-Nord	01937-08-071937[21]	current
Highway 66	103.5	64.3	Highway 566 near Matachewan	R-117 (TCH) towards Rouyn-Noranda, Quebec	01937-09-221937[21]	current
Highway 67	9.8	6.1	Highway 11 – Porquis Junction	De Troyes Avenue in Iroquois Falls	01937-06-301937[21]	current
Highway 69	140.3	87.2	Northern terminus of  Highway 400 near Carling	Highway 17 in Sudbury	01936-08-051936[23]	current
Highway 71	194.1	120.6	US 53 / US 71 at International Falls, MN	Highway 17 near Kenora	01937-09-011937[21]	current
Highway 72	68.5	42.6	Highway 17 in Dinorwic	Highway 642 in Sioux Lookout	01937-10-061937[21]	current
Highway 77	22.6	14.0	Highway 3 in Leamington	Highway 401 near Comber	01963-04-011963[22]	current
Highway 85	9.8	6.1	Victoria Street North in Kitchener	Regional Road 15 (King Street) in Woolwich Township	01934-03-281934[19]	current
Highway 89	107.0	66.5	Highway 9 in Harriston	Highway 400 near Cookstown	01938-01-011938[24]	current
Highway 93	24.1	15.0	Highway 400 near Hillsdale	Highway 12 in Midland	01938-04-131938[25]	current
Highway 94	12.0	7.5	Highway 654 near Callander	Highway 17 near Corbeil	01937-06-161937[21]	current
Highway 101	473.3	294.1	Highway 17 near Wawa	R-388 at Ontario–Quebec border	01940-06-061940[26]	current
Highway 102	32.8	20.4	Highway 11 / Highway 17 at Sistonens Corners	Highway 11 / Highway 17 / TCH in Thunder Bay	01972-01-011972[27][28]	current
Highway 105	173.5	107.8	Highway 17 near Vermilion Bay	Highway 618 in Red Lake	01947-08-271947[29]	current
Highway 108	41.6	25.8	Highway 17 in Serpent River	Highway 639 north of Elliot Lake	01957-12-191957[30]	current
Highway 112	19.6	12.2	Highway 11 near Tarzwell	Highway 66 near Kirkland Lake	01953-12-311953[31][32]	current
Highway 115	56.7	35.2	Highway 401 near Newcastle	Highway 7 in Peterborough	01955-03-221955[33]	current
Highway 118	127.8	79.4	Highway 11 near Bracebridge	Highway 28 near Bancroft	01955-11-161955[34]	current
Highway 124	91.2	56.7	Highway 400 near Parry Sound	Highway 11 near Sundridge	01955-10-191955[34]	current
Highway 125	13.4	8.3	Highway 105 south of Red Lake	Cochenour Ferry Dock	01955-11-231955[34]	current
Highway 127	38.6	24.0	Highway 62 at Maynooth	Highway 60 near Whitney	01955-10-191955[34]	current
Highway 129	220.7	137.1	Highway 17 in Thessalon	Chapleau south limits	01956-01-011956	current
Highway 130	15.4	9.6	Highway 61 near McCluskeys Corners	Highway 11 / Highway 17 / TCH near Thunder Bay	01955-12-071955[34]	current
Highway 132	30.3	18.8	Highway 41 near Dacre	Highway 60 in Renfrew	01956-01-111956[34]	current
Highway 137	4.3	2.7	I-81 at Wellesley Island, New York	Highway 401 near Ivy Lea	01965-01-011965[35]	current
Highway 138	38.7	24.0	9th Street West in Cornwall	Highway 417 (TCH) near Casselman	01967-05-011967[22]	current
Highway 140	10.9	6.8	Highway 3 in Port Colborne	Main Street in Welland	01972-10-051972[36]	current
Highway 141	54.3	33.7	Highway 400 near Parry Sound	Highway 11 near Port Sydney	01974-12-181974	current
Highway 144	271.7	168.8	Highway 17 in Sudbury	Highway 101 near Timmins	01965-04-011965[22]	current
Highway 148	7.0	4.3	Highway 41 south (MacKay Street) in Pembroke	R-148 at L'Isle-aux-Allumettes	01982-10-101982[37][38]	current

Number	Length (km)	Length (mi)	Southern or western terminus	Northern or eastern terminus	Local names	Formed	Removed	Notes
Highway 400	226.0	140.4	Maple Leaf Drive in Toronto (continues as Black Creek Drive)	Highway 69 in Carling	Toronto–Barrie Highway	01952-07-011952[39]	current	Scheduled for extension to Sudbury.[39]
Highway 401	828.0	514.5	Ojibway Parkway in Windsor	A-20 towards Montreal, QC	Macdonald–Cartier Freeway, Rt. Hon. Herb Gray Parkway, Highway of Heroes	01952-07-011952[39]	current	Backbone of the 400-series network; busiest highway in North America.[40] Scheduled for extension to American border following completion of the Gordie Howe International Bridge. Extended length will terminate at an interchange with I-75 on the bridge.
Highway 402	102.5	63.7	I-69 / I-94 at Canada–United States border on Blue Water Bridge in Point Edward	Highway 401 in London		01953-01-011953[41]	current
Highway 403	125.2	77.8	Highway 401 near Woodstock	Highway 401 / Highway 410 in Mississauga	Chedoke Expressway, Alexander Graham Bell Parkway	01963-12-011963[42]	current
Highway 404	50.1	31.1	Highway 401 / DVP in Toronto	Woodbine Avenue in East Gwillimbury		01977-01-011977[43]	current
Highway 405	8.7	5.4	Queen Elizabeth Way – St. Catharines	I-190 at Canada–United States border on Queenston-Lewiston Bridge towards Lewiston, NY	General Brock Parkway	01963-09-111963[42]	current
Highway 406	26.0	16.2	East Main Street in Welland	Queen Elizabeth Way in St. Catharines		01965-12-071965[42]	current
Highway 407	151.4	94.1	Highway 403 / Queen Elizabeth Way in Burlington	Highway 115 in Clarington		01997-06-071997[44]	current	Tollway divided into two sections; Highway 407E and 407 ETR, with the latter privately operated[45]
Highway 409	5.6	3.5	Pearson Airport in Mississauga	Highway 401 in Toronto	Belfield Expressway	01978-08-251978[46]	current
Highway 410	20.3	12.6	Highway 401 / Highway 403 in Mississauga	Highway 10 (Hurontario Street) in Caledon		01978-11-151978[47]	current
Highway 412	10.0	6.2	Highway 401 in Whitby	Highway 407 in Whitby	West Durham Link	02016-06-202016[48]	current	Former tolled Highway. Route number assigned February 5, 2015[49]
Highway 416	76.4	47.5	Highway 401 towards Brockville	Highway 417 in Ottawa	Veterans Memorial Highway	01999-09-231999[50]	current
Highway 417	192.0	119.3	Highway 17 in Arnprior	A-40 towards Montreal, QC	Queensway, Trans-Canada Highway	01971-01-011971[51]	current	Unlike most freeways, kilometre posts are numbered east to west.
Highway 418	12.8	8.0	Highway 401 in Clarington	Highway 407 in Clarington	East Durham Link	02019-12-092019[52]	current	Former tolled highway. Route number assigned February 5, 2015.[49] Opened on December 9, 2019
Highway 420	3.3	2.1	Regional Road 98 (Montrose Road) in Niagara Falls	Regional Road 102 (Stanley Avenue) in Niagara Falls	Niagara Veterans Memorial Highway	01941-11-011941[53]	current
Highway 427	27	17	Queen Elizabeth Way/Gardiner Expressway in Toronto	Regional Road 25 in Vaughan		01971-12-041971[54]	current	6.6 km (4.1 mi) Extension from Highway 7 north to York Regional Road 25 (Major Mackenzie Drive) opened Sept 18 2021
Queen Elizabeth Way	139.1	86.4	I-190 at Canada–United States border on Peace Bridge in Fort Erie	Highway 427 in Toronto		01937-12-311937[55]	current

The following is a list of the unsigned 7000-series highways as of October 2020. This list is compiled using the official MTO Provincial Highway Network and MTO Jurisdiction datasets.^[2][92][93]

• Ontario portal
• Roads portal

• Ministry of Transportation
• Ontario 511 Traveller Information
• MTO Provincial Highway Network

• Ontario Highways - The History of the King's Highways and other Ontario Provincial Highways
• Ontario Highways - asphaltplanet.ca