List of highways in Ontario

King's Highways

400-series highways

Secondary highways

• Highway 500 - Tory Hill
• Highway 501 - from Highway 103 north of Port Severn to Honey Harbour
• Highway 502 - from Highway 11 near Fort Frances to Highway 594 near Dryden. Formerly in Southern Ontario between Napanee and Marysville in Lennox and Addington County as an alternate route while a portion of Highway 401 was being constructed.
• Highway 503 - Highway 121 in Tory Hill to Highway 48 in Kirkfield
• Highway 504 - Highway 28 in Apsley to Highway 620 in Glen Alda
• Highway 505 - Highway 48 east of Kirkfield to Highway 503 in Uphill
• Highway 506 - Highway 41 south of Cloyne to Highway 509 in Plevna
• Highway 507 - Highway 28 southwest of Lakefield to Highway 503 in Gooderham
• Highway 508 - Highway 17 west of Arnprior to Highway 511 in Calabogie
• Highway 509 - Highway 506 in Plevna to Highway 7 west of Highway 38 near Sharbot Lake
• Highway 510 - Highway 520 in Magnetawan to Highway 124
• Highway 511 - Highway 7 in Perth to Highway 508 in Calabogie
• Highway 512 - Highway 60 outside Killaloe to Highway 41 outside Eganville
• Highway 513 - Highway 132 in Dacre to township boundary east of Hyndford
• Highway 514 - Highway 28 in Hardwood Lake to Highway 515 east of Palmer Rapids
• Highway 515 - Highway 62 in Combermere to Highway 512 west of Foymount
• Highway 516 - Highway 72 in Sioux Lookout to Highway 599 near Savant Lake
• Highway 517 - Highway 62 in Combermere to Boulter Road 15 kilometres southwest
• Highway 518 - Highway 69 near Parry Sound to Kearney
• Highway 519 - Highway 17 north of Wawa to Dubreuilville
• Highway 520 - Highway 11 in Burks Falls to Ardbeg; co-designated with Highway 124 from north of Magnetawan to east of Dunchurch
• Highway 522 - Highway 69 near Grundy Lake Provincial Park to Highway 11 in Trout Creek

• Highway 523 - Highway 60 in Madawaska to Hastings County boundary
• Highway 524 - Highway 522 near Commanda to Highway 534 near Restoule
• Highway 525 - Highway 596 near Minaki to Whitedog
• Highway 526 - Highway 69 to Britt
• Highway 527 - Highways 11 and 17 near Thunder Bay to Armstrong. Once Provincial Highway 800.
• Highway 528 - Highway 64 in French River to the community of Wolseley Bay
• Highway 528A - Highway 528 near the community of Wolseley Bay to the Wolseley Bay water body
• Highway 529 - Highway 69 near Pointe au Baril Station to Highway 69 near Byng Inlet and Britt
• Highway 529A - Highway 529 to Bayfield Inlet
• Highway 531 - Highway 17 west of Rutherglen to Bonfield
• Highway 532 - Highway 556 south of Searchmont northward for 15 kilometres
• Highway 533 - Highway 63 near Eldee to Highway 17 in Mattawa
• Highway 534 - Highway 11, near Powassan to Restoule Provincial Park
• Highway 535 - Highway 64 in Noelville to north of Highway 17 north of Hagar
• Highway 536 - Highway 17 near Lively to Creighton Mine
• Highway 537 - Highway 69 south of Wanup to Highway 17 in Wahnapitae
• Highway 538 - Highway 17 in Algoma Mills to Highway 17 near Spragge. Old alignment of Highway 17.
• Highway 539 - Highway 17 in Warren to Highway 64 in Field
• Highway 539A - Highway 539 near River Valley to Highway 805 west of River Valley
• Highway 540 - Highway 6 in Little Current to Meldrum Bay, on Manitoulin Island
• Highway 540A - Highway 540 to Barrie Island
• Highway 540B - Highway 540 to Gore Bay
• Highway 541 - Highway 17 in Sudbury to Skead
• Highway 541A - Highway 541 in Garson to Falconbridge mine entrance
• Highway 542 - Highway 540 to Highway 6 near Tehkummah
• Highway 542A - Highway 542 to Tehkummah
• Highway 546 - Highway 17 in Iron Bridge to Mount Lake
• Highway 547 - Highway 101 east of Wawa to Hawk Junction
• Highway 548 - Highway 17 to St. Joseph Island
• Highway 550 - Highway 17 in Sault Ste. Marie to shore of Whitefish Bay at Gros Cap
• Highway 550A - Sault Ste. Marie
• Highway 550B - Sault Ste. Marie
• Highway 551 - Highway 540 in M'Chigeeng to south of Providence Bay
• Highway 552 - originally part of Highway 17, runs from Highway 556 to Goulais River.
• Highway 553 - Highway 17 in Massey, Ontario to Highway 810
• Highway 554 - Highway 129 north of Wharncliffe to Highway 546 north of Iron Bridge
• Highway 555 - Highway 557 north of Blind River northerly for a few kilometres.
• Highway 556 - Highway 17 in Heyden to Highway 129
• Highway 557 - Highway 17 in Blind River to Martinenda Lake
• Highway 558 - Highway 11 near Haileybury to Mowat's Landing on the Montreal River
• Highway 559 - Highway 69 north of Nobel to Killbear Provincial Park
• Highway 560 - Highway 11 in Earlton to Highway 144 south of Gogama
• Highway 560A - Highway 560 to Westree
• Highway 562 - Highway 11 near Thornloe to Highway 65 at McCool
• Highway 563 - Highway 17 at Batchawana Bay southerly for five kilometres
• Highway 564 - Highway 112 near Tarzwell to Boston Creek
• Highway 565 - Highway 550 west of Sault Ste. Marie to Prince Township - Sault Ste. Marie boundary. Used to end at Sault Ste. Marie Airport road.
• Highway 566 - Highway 66 in Matachewan westerly for 23 kilometres
• Highway 567 - From North Cobalt southeast along Lake Timiskaming
• Highway 568 - Highway 11 at Kenogami Lake to Ontario Northland Railway
• Highway 569 - Highway 11 near Harley to Highway 11 near Englehart
• Highway 570 - Highway 11 to Sesekinika
• Highway 571 - Highway 11 in Earlton to Highway 562
• Highway 572 - Highway 101 east of Matheson to Highway 11 in Ramore
• Highway 573 - Highway 11 south of Highway 112 to Highway 560 in Charlton
• Highway 574 - Highway 652 east of Cochrane to Norembega
• Highway 575 - Highway 17 in Verner to Highway 64 in Field
• Highway 576 - Highway 101 west of Timmins northwesterly
• Highway 577 - Highway 101 in Shillington to Highway 11 near Monteith. Used to continue north to Highway 67 in Iroquois Falls.
• Highway 578 - Highway 11 near Nellie Lake to Highway 67 in Iroquois Falls
• Highway 579 - Highway 11 in Cochrane to Gardiner
• Highway 580 - Highway 11 near Beardmore to Lake Nipigon
• Highway 581 - Highway 11 in Moonbeam to Rene Brunelle Provincial Park
• Highway 582 - loops around Ontario Hwy 11/17 through Hurkett.
• Highway 583 - Cochrane District from Mead to Lac-Sainte-Thérèse
• Highway 584 - Highway 11 south of Geraldton to Nakina
• Highway 585 - Highway 11/17 near Nipigon to Pine Portage
• Highway 586 - Highway 11 near Shebandowan westerly for about five kilometres
• Highway 587 - Highway 11/17 northwest of Pass Lake to Sleeping Giant.
• Highway 588 - Highway 11/17 west of Thunder Bay to west of Suomi
• Highway 589 - Highway 102 west of Thunder Bay to Dog Lake
• Highway 590 - Highway 11/17 in Kakabeka Falls to Highway 588 near Nolalu
• Highway 591 - Highway 589 north of Highway 102 northwest for 10 kilometres
• Highway 592 - Highway 11 in Novar to Highway 11 north of Emsdale. Northern terminus no longer connects with Highway 11. Original alignment of Highway 11.
• Highway 593 - Highway 588 southwest of Nolalu to Highway 61 north of international bridge. Southernmost portion originally part of Highway 61.
• Highway 594 - Highway 17 in Dryden to Highway 17 north of Eagle River
• Highway 595 - Highway 590 west of Kakabeka Falls to Highway 597
• Highway 596 - Highway 17A to Minaki. Used to start at Highway 17 in Keewatin.
• Highway 597 - Highway 608 west of Highway 61 to Pardee, south of Highway 595
• Highway 598 - Highway 604 to Highway 658 outside Kenora
• Highway 599 - Highway 17 near Ignace to Central Patricia near Pickle Lake.
• Highway 600 - Highway 11 in Rainy river to Highway 71 east of Black Hawk
• Highway 601 - Highway 17 in Dryden to Highway 17 east of Dryden
• Highway 602 - Highway 11 west of Fort Frances to Highway 11 at Emo.
• Highway 603 - Highway 17 in Borups Corners to Dyment
• Highway 604 - Highway 17 in Kenora to Highway 17A at Highway 671
• Highway 605 - Highway 17 at Oxdrift to north of Eton-Rugby
• Highway 606 - Highway 17 at Sudbury to Markstay
• Highway 607 - Highway 64 east of Alban to Highway 69 at Bigwood
• Highway 607A - Highway 607 east of Highway 69 to French River
• Highway 608 - from Highway 61 to South Gillies.
• Highway 609 - Highway 105 at Red Lake Road to Clay Lake
• Highway 610 - Highway 101 in Hoyle to Highway 67 at Barbers Bay
• Highway 611 - Highway 602 southwest of Fort Frances to north of Highway 11
• Highway 612 - Highway 69 at Gordon Bay to Parry Sound-Muskoka boundary
• Highway 613 - Highway 602 to Government Landing.
• — Highway 614 - Highway 17 to Manitouwadge.
• Highway 615 - Highway 71 at Highway 600 to Burditt Lake
• Highway 617 - Highway 11 in Stratton to Highway 600 in North Branch
• Highway 618 - Highway 105 in Red Lake to Madsen.
• Highway 619 - Highway 11 in Pinewood to Highway 621 in Minahico
• Highway 620 - Highway 62 south of L'Amable to Highway 28 in Apsley
• Highway 621 - Highway 11 in Sleeman to Lake of the Woods, north of Morson
• Highway 622 - Highway 11B in Atikokan to Highway 17 west of Ignace
• Highway 623 - Highway 11 east of Atikokan to Sapawe
• Highway 624 - Highway 569 just off Highway 11 near Englehart to Highway 66 in Larder Lake
• Highway 625 - Highway 11 east of Longlac to Caramat
• Highway 626 - Highway 17 west of Highway 627 to Marathon
• Highway 627 - Highway 17 north of Heron Bay to Pic River.
• Highway 628 - Highway 11/17 to Red Rock.
• Highway 629 - Highway 101 in Timmins to Timmins Airport
• Highway 630 - Highway 17 west of Mattawa to Kiosk in Algonquin Provincial Park
• Highway 631 - Highway 17 at White River, through Hornepayne, to Highway 11 west of Hearst.
• Highway 632 - Highway 141 in Rosseau to Parry Sound-Muskoka boundary
• Highway 633 - Highway 11 east of Highway 623 to Kawene
• Highway 634 - Highway 11 in Smooth Rock Falls to Fraserdale, Ontario. Private road continues from end of highway to Otter Rapids.
• Highway 635 - Highway 17 in Rolphton to interprovincial bridge across Ottawa River
• Highway 636 - Highway 11 west of Cochrane to north of Frederick
• Highway 637 - Highway 69 south of Estaire to Killarney
• Highway 638 - Goes through the mountainous terrain of northern Ontario. It starts at Highway 17 in Bruce Mines and ends at Highway 17 in Echo Bay
• Highway 639 - Highway 108 north of Elliot Lake to Highway 546 near Mount Lake
• Highway 640 - Highway 571 in Earlton to Earlton Airport
• Highway 641 - Highway 17 east of Highway 17A west junction to Highway 596
• Highway 642 - Highway 516 in Sioux Lookout to Highway 599 at Silver Dollar
• Highway 643 - Highway 584 west of Nakina to Aroland
• Highway 644 - Highway 69 at Pointe au Baril Station westerly for 800 metres
• Highway 645 - Highway 529 in Magnetawan First Nation to Byng Inlet
• Highway 646 - Highway 599 in Central Patricia to Pickle Crow Mine
• Highway 647 - Highway 17 at Vermilion Bay to Blue Lake Provincial Park
• — Highway 648 - Highway 121 east of Tory Hill to Dyno Mine, five kilometres south of Highway 121
• — Highway 649 - Highway 121 south of Kinmount to Highway 36 in Bobcaygeon
• Highway 650 - Highway 112 south of Swastika to Adams Mine site
• Highway 651 - Highway 101 west of Chapleau to Missanabie
• Highway 652 - Highway 11 in Cochrane to Kattawagami River Bridge. Private road continues from end of highway to Detour Lake Mine
• Highway 653 - Highway 17 in Haley Station to interprovincial bridge across Ottawa River. Now County Rd. 653.
• Highway 654 - Highway 11 in Callander to Highway 534 in Nipissing
• Highway 655 - Highway 11 in Driftwood to Highway 101 in Schumacher
• Highway 656 - Highway 533 northwest of Mattawa to hydroelectric dam on Ottawa River
• Highway 657 - Highway 105 in Ear Falls to Goldpines
• Highway 658 - Kenora, Ontario. Highway 17 north to Redditt. Formerly Highway 128, then Highway 666. Changed in 1985 after complaints from a Pentecostal church located on highway, and due to rampant highway sign theft, for obvious reasons. Original route went from Highway 17, west of Whitefish north to Fairbank Provincial Park; transferred to Sudbury in 1973.
• — Highway 659 - Highway 604 northeast of Kenora to Highway 658 south of Redditt
• Highway 661 - Highway 144 north of Highway 560 to Gogama
• Highway 663 - Highway 11 west of Hearst to Calstock
• Highway 664 - Highway 72 southwest of Sioux Lookout to Hudson
• Highway 665 - Highway 17 north of Dryden to Richan
• — Highway 666 - see Highway 658
• Highway 667 - Highway 129 southeast of Chapleau to Sultan
• Highway 668 - Highway 11 west of Cochrane to Greenwater Provincial Park
• Highway 670 - Highway 638 near Ophir to Dunns Valley.
• Highway 671 - Highway 17A to Grassy Narrows
• Highway 672 - Highway 66 east of King Kirkland to Highway 101 west of Quebec border
• Highway 673 - Highway 17 east of Manitoba Border to Kejick First Nation boundary

  Tertiary highways

• Highway 800 - Not currently assigned. Became Highway 527 in 1976.
• Highway 801 - Highway 11 to Namewaminikan River
• Highway 802 - Kashabowie to Burchell Lake in Thunder Bay District.
• Highway 803 - Not currently assigned. Became Highway 101 to Nighthawk Lake in 1997.
• Highway 804 - Manitou Falls Hydroelectric dam to Highway 105 near Ear Falls in Kenora District.
• Highway 805 - Highway 539A to Pond Lake
• Highway 806 - Not currently assigned. Became Highway 545 in 1973.
• Highway 807 - Not currently assigned. Became Highway 622 in 1989.
• Highway 808 - Not currently assigned. From Highway 599 in Central Patricia to Otoskwin River Bridge. Previously an extension of Highway 599. Decommissioned in 1983.
• Highway 809 - Decommissioned road near Boston Creek
• Highway 810 - Highway 553 to Richie Falls
• Highway 811 - Highway 527 northwesterly for 59 kilometres - the longest Tertiary Highway in Ontario
• Highway 812 - Not currently assigned. Became Highway 502 in 1981.
• Highway 813 - Decommissioned road near Sturgeon Falls

  7000-series highways

• Highway 7016: Peter Road, near Bothwell, Ontario. This is now a municipal road.
• Highway 7036: spur off Highway 11 in Newmarket Township, near Cochrane, for a distance of 4.4 km.
• Highway 7037: Loop of Highway 11 in Hanny Township. Loops Highway 11 for 9.5 km.
• Highway 7041: loop off Highway 6 at Whitefish Falls. 1.3 km in length.
• Highway 7042: loop off Highway 69 in former Dill Township, Greater Sudbury; former alignment of Highway 69 known locally as Secord Road and Old Wanup Road. 15.2 km in length.
• Highway 7044: loop off Highway 144 between Windy Lake and Cartier. 23.2 km in length.
• Highway 7047: Lakeshore Road in Selim, Ontario
• Highway 7048: spur off Highway 11 in Rainy Lake to Rainy Lake Landing, Ontario, a distance of 1.0 km.
• Highway 7051: Winter Ferry Dock with Highway 96 on Wolfe Island. Now municipal road.
• Highway 7057: Willard Lake Road, spur off Highway 17 to Willard Lake, 72 km west of Vermilion Bay. 1.3 km in length.
• Highway 7059: Long Bow Lake Road, loop of Highway 17. East junction with Highway 17, looping back to Highway 17 at its western junction, 3.4 km later.
• Highway 7082: Smith Street, spur off Highway 17 in Nairn Township, to Nairn Township/Lorne Township boundary, a distance of 2.9 km.
• Highway 7087: Highway 2 in Windsor, Ontario, from Highway 3 to Banwell Road.
• Highway 7094: Rest Acres Road, in Paris, Ontario. This is now part of Highway 24
• Highway 7102: loop off Highway 71 in Godson Township
• Highway 7104: spur off Highway 105
• Highway 7116: Bloomfield Road in Chatham, Ontario. This road was turned back in 1998, and is now only designated as Chatham-Kent Road 27.
• Highway 7125: Rockeries Road, spur off Highway 17 near Clearwater Bay
• Highway 7146: Main Street Tunnel in Welland
• Highway 7162: Ontario Street, in Burk's Falls, Ontario. Former alignment of Highway 11. Now part of an extended Secondary Highway 520.
• Highway 7180: Talbot Street in St. Thomas, Ontario, original alignment of Highway 3 was maintained from completion of the St. Thomas Expressway in 1982, until being turned back in 1997.
• Highway 7181: spur off Highway 581 to Remi Lake
• Highway 7182: former Highway 69 alignment north of Highway 559
• Highway 7186: Thorold Stone Road from Highway 58 east to Thorold Townline Road. 0.8 km in length.
• Highway 7182: Shebeshekong Road, 18 km in length from Highway 559 to Highway 69 in Carling.
• Highway 7187: King Street Bypass, connecting Highway 401 to Highway 8 in Kitchener, a distance of 3.3 km. Now part of Highway 8.
• Highway 7189: Eastport Drive, connecting Queen Elizabeth Way exit 93 to former Highway 2 in Hamilton
• Highway 7195: York Regional Road 71, connecting former Highway 7 with Dufferin Street in Thornhill, a distance of around 1 km.
• Highway 7197: The so-called "Hwy 403-Trafalgar Road Connector", built in 1985, opened in 1986, became eastbound carriageway for Highway 407 in 1997.
• Highway 7202: Highway 410 from Peel Road 5/Derry Road to Peel Road 15, and then from Peel Road 15 to the intersection of Bovaird Drive/Heart Lake Road.
• Highway 7236: Woodlawn Road from Highway 406 to Seaway Mall Drive in Welland. Now almost completely downloaded to the Niagara Region and signed as Niagara Regional Road 41.
• Highway 7237: Highway 48/York Regional Road 14, for 1 km. has an Average Annual Daily Traffic count of 22,800.
• Highway 7241: Oastler Park Drive. This 7000-series road is around 8.1 km in length at this time. Its termini are with Highway 69/Highway 400, and the intersection of Bowes Street and Louisa Street in Parry Sound.
• Highway 7250: Thunder Bay Expressway
• Highway 7260: New Wasaga Beach bypass, from the intersection of Highway 26 and Mosley Street, to the intersection of Sixth Line East and Highway 26, a distance of 7.9 km
• Highway 7272: Future Highway 11 freeway alignment currently under construction bypassing South River and Sundridge
• Highway 7273: Upper James Street in Hamilton, Ontario. Former alignment of Highway 6, terminates at a Pioneer Gas Bar). Has an Average Annual Daily Traffic count of 19,200 vehicles per day.
• Highway 7274: Highway 6 airport connection, from Highway 6 to Airport Road, near Hamilton and Hamilton/John C. Munro International Airport.
• Highway 7276: Highway 410's new extension, temporary designation until the road is completed
• Highway 7279: Estaire Road - former alignment of Hwy 69 from village of Estaire at South end, terminating at North end at Gladu Road.
• Highway 7289: Lake Joseph Road - former alignment of Highway 69 from Highway 400 exit 189 to southern intersection with Ontario Highway 141
• Highway 7290: Lake Joseph Road - former alignment of Highway 69 from northern intersection with Highway 141 to Highway 400 exit 213
• Highway 7901: Windor-Essex Parkway - New extension of Highway 401

  Former highways