Secondary highways are lower-class provincially-maintained roads, found mostly in Northern Ontario, Canada, with some along the Georgian Bay, and in Central Ontario.
| By province or territory |
Pages in category "Ontario secondary highways"
The following 169 pages are in this category, out of 169 total. This list may not reflect recent changes.
- List of secondary highways in Algoma District
- List of secondary highways in Cochrane District
- List of secondary highways in Kenora District
- List of secondary highways in Manitoulin District
- List of secondary highways in Nipissing District
- List of secondary highways in Parry Sound District
- List of secondary highways in Rainy River District
- List of secondary highways in Sudbury District
- List of secondary highways in Thunder Bay District
- List of secondary highways in Timiskaming District
0–9
- Ontario Highway 500
- Ontario Highway 501
- Ontario Highway 502
- Ontario Highway 503
- Ontario Highway 504
- Ontario Highway 508
- Ontario Highway 510
- Ontario Highway 513
- Ontario Highway 516
- Ontario Highway 517
- Ontario Highway 518
- Ontario Highway 519
- Ontario Highway 520
- Ontario Highway 522
- Ontario Highway 522B
- Ontario Highway 523
- Ontario Highway 524
- Ontario Highway 525
- Ontario Highway 526
- Ontario Highway 527
- Ontario Highway 528
- Ontario Highway 528A
- Ontario Highway 529
- Ontario Highway 529A
- Ontario Highway 531
- Ontario Highway 532
- Ontario Highway 533
- Ontario Highway 534
- Ontario Highway 535
- Ontario Highway 536
- Ontario Highway 537
- Ontario Highway 538
- Ontario Highway 539
- Ontario Highway 539A
- Ontario Highway 540
- Ontario Highway 540A
- Ontario Highway 540B
- Ontario Highway 541
- Ontario Highway 541A
- Ontario Highway 542
- Ontario Highway 542A
- Ontario Highway 544
- Ontario Highway 545
- Ontario Highway 546
- Ontario Highway 547
- Ontario Highway 548
- Ontario Highway 549
- Ontario Highway 550
- Ontario Highway 550B
- Ontario Highway 551
- Ontario Highway 552
- Ontario Highway 553
- Ontario Highway 554
- Ontario Highway 555
- Ontario Highway 556
- Ontario Highway 557
- Ontario Highway 558
- Ontario Highway 559
- Ontario Highway 560
- Ontario Highway 562
- Ontario Highway 563
- Ontario Highway 564
- Ontario Highway 565
- Ontario Highway 566
- Ontario Highway 567
- Ontario Highway 568
- Ontario Highway 569
- Ontario Highway 570
- Ontario Highway 571
- Ontario Highway 572
- Ontario Highway 573
- Ontario Highway 574
- Ontario Highway 575
- Ontario Highway 577
- Ontario Highway 579
- Ontario Highway 580
- Ontario Highway 581
- Ontario Highway 582
- Ontario Highway 583
- Ontario Highway 584
- Ontario Highway 585
- Ontario Highway 586
- Ontario Highway 587
- Ontario Highway 588
- Ontario Highway 589
- Ontario Highway 590
- Ontario Highway 591
- Ontario Highway 592
- Ontario Highway 593
- Ontario Highway 594
- Ontario Highway 595
- Ontario Highway 596
- Ontario Highway 597
- Ontario Highway 599
- Ontario Highway 600
- Ontario Highway 601
- Ontario Highway 602
- Ontario Highway 603
- Ontario Highway 604
- Ontario Highway 605
- Ontario Highway 606
- Ontario Highway 607
- Ontario Highway 607A
- Ontario Highway 608
- Ontario Highway 609
- Ontario Highway 610
- Ontario Highway 611
- Ontario Highway 612
- Ontario Highway 613
- Ontario Highway 614
- Ontario Highway 615
- Ontario Highway 618
- Ontario Highway 619
- Ontario Highway 621
- Ontario Highway 623
- Ontario Highway 624
- Ontario Highway 625
- Ontario Highway 626
- Ontario Highway 627
- Ontario Highway 628
- Ontario Highway 630
- Ontario Highway 631
- Ontario Highway 632
- Ontario Highway 633
- Ontario Highway 634
- Ontario Highway 635
- Ontario Highway 636
- Ontario Highway 637
- Ontario Highway 638
- Ontario Highway 639
- Ontario Highway 640
- Ontario Highway 641
- Ontario Highway 642
- Ontario Highway 643
- Ontario Highway 644
- Ontario Highway 645
- Ontario Highway 646
- Ontario Highway 647
- Ontario Highway 648
- Ontario Highway 650
- Ontario Highway 651
- Ontario Highway 622
- Ontario Highway 652
- Ontario Highway 653
- Ontario Highway 654
- Ontario Highway 655
- Ontario Highway 656
- Ontario Highway 657
- Ontario Highway 658
- Ontario Highway 661
- Ontario Highway 663
- Ontario Highway 664
- Ontario Highway 665
- Ontario Highway 667
- Ontario Highway 668
- Ontario Highway 670
- Ontario Highway 671
- Ontario Highway 672
- Ontario Highway 673