This is alist of secondary highways in Nipissing District, many of which serve aslogging roads or provide access toAlgonquin Park and sparsely populated areas in theNipissing District of northeasternOntario.

Highway 523
Route information
Maintained by theMinistry of Transportation of Ontario
Length	20.1 km[1] (12.5 mi)
Major junctions
South end	Nipissing–Hastings boundary
North end	Highway 60 –Madawaska
Location
Country	Canada
Province	Ontario
Districts	Nipissing
Highway system
Ontario provincial highways Current Former 400-series
←Highway 522B →Highway 524

Secondary Highway 523, commonly referred to asHighway 523, is aprovincially maintained highway in theCanadian province ofOntario. The highway is a 20.1-kilometre (12.5 mi) north–south route inNipissing District which follows the historicMadawaska Colonization Road. The highway begins at the Nipissing-Hastings boundary, where it continues south toHighway 127. It ends atHighway 60 in the village ofMadawaska.

Highway 531
Route information
Maintained byMinistry of Transportation of Ontario
Length	13.5 km[1] (8.4 mi)
Existed	1956[2]–present
Major junctions
South end	Maple Road inBonfield
North end	Highway 17 –Ottawa
Location
Country	Canada
Province	Ontario
Divisions	Nipissing District
Villages	Bonfield
Highway system
Ontario provincial highways Current Former 400-series
←Highway 529A →Highway 532

Secondary Highway 531, commonly referred to asHighway 531, is aprovincially maintained secondary highway in theCanadian province ofOntario. It connectsHighway 17 east ofNorth Bay with the community ofBonfield. The 3.5-kilometre (2.2 mi) route was established in 1956, and has remained the same since then. It passes through a forested area and has several private residences located along its length. Aside from Maple Road, its southern terminus, and Highway 17, its northern terminus, Highway 531 encounters no roads along its length.

Highway 533
Route information
Maintained byMinistry of Transportation of Ontario
Length	53.4 km[1] (33.2 mi)
Existed	1956[2]–present
Major junctions
South end	Highway 17 inMattawa
Major intersections	Highway 656
North end	Highway 63 nearEldee
Location
Country	Canada
Province	Ontario
Divisions	Nipissing District
Towns	Mattawa
Highway system
Ontario provincial highways Current Former 400-series
←Highway 532 →Highway 534

Secondary Highway 533, commonly referred to asHighway 533, is aprovincially maintained secondary highway in theCanadian province ofOntario. The route begins in the town ofMattawa, atHighway 17, and travels north toHighway 63.

Highway 539
Route information
Maintained by theMinistry of Transportation of Ontario
Length	36.9 km[1] (22.9 mi)
Major junctions
Southwest end	Highway 17 inWarren
Major intersections	Highway 539A inRiver Valley
Northeast end	Highway 64 inField
Location
Country	Canada
Province	Ontario
Divisions	Sudbury District,Nipissing District
Major cities	Markstay-Warren,West Nipissing
Highway system
Ontario provincial highways Current Former 400-series
←Highway 538 →Highway 539A

Secondary Highway 539, commonly referred to asHighway 539, is asecondary highway in theCanadian province ofOntario, located within theSudbury andNipissing Districts. Commencing at a junction withHighway 17 in the community ofWarren, the highway extends northeasterly for 23.3 kilometres (14.5 mi) to the community ofRiver Valley, and thence southeasterly for 13.6 kilometres (8.5 mi) to a junction withHighway 64 inField.

A spur route,Highway 539A, extends northwesterly from Highway 539 at River Valley.

Highway 539A
Route information
Maintained by theMinistry of Transportation of Ontario
Length	5.8 km[1] (3.6 mi)
Existed	1958–present
Major junctions
Southeast end	Highway 539 inRiver Valley
Northwest end	Highway 805 at theSudbury–Nipissing boundary
Location
Country	Canada
Province	Ontario
Divisions	Nipissing District
Towns	West Nipissing,River Valley
Highway system
Ontario provincial highways Current Former 400-series
←Highway 539 →Highway 540

Secondary Highway 539A, commonly referred to asHighway 539A, is aprovincially maintained secondary highway in theCanadian province ofOntario, located withinNipissing District. Commencing at a junction withHighway 539 in the community ofRiver Valley, the highway extends northwesterly for 13.1 kilometres (8.1 mi) to a point near where theSturgeon River crosses the boundary between Nipissing andSudbury District. At this point, the roadway turns northward and continues asHighway 805.

Highway 575
Route information
Maintained by theMinistry of Transportation of Ontario
Length	20.0 km[1] (12.4 mi)
Major junctions
Northeast end	Highway 17 inVerner
Northwest end	Highway 64 inField
Location
Country	Canada
Province	Ontario
Divisions	Nipissing District
Towns	West Nipissing,Verner,Field
Highway system
Ontario provincial highways Current Former 400-series
←Highway 574 →Highway 577
Former provincial highways Highway 576 →

Secondary Highway 575, commonly referred to asHighway 575, is asecondary highway in theCanadian province ofOntario, located withinNipissing District. Commencing at Highway 17 inVerner, the highway travels toHighway 64 in the community ofField, a distance of 20.0 km (12.4 mi).

Highway 630
Route information
Maintained by theMinistry of Transportation of Ontario
Length	27.7 km[1] (17.2 mi)
Existed	July 28, 1961[3]–present
Major junctions
South end	Algonquin Park Access Point #29 atKiosk
North end	Highway 17 /TCH nearEau Claire Station
Location
Country	Canada
Province	Ontario
Divisions	Nipissing District
Highway system
Ontario provincial highways Current Former 400-series
←Highway 628 →Highway 631

Secondary Highway 630, commonly referred to asHighway 630, is asecondary highway in theCanadian province ofOntario. It provides access toAlgonquin Provincial Park from the north atKioshkakwi Lake. It is 27.7 kilometres (17.2 mi) in length and linksHighway 17 with the community ofKiosk. It was assumed as a provincial route on July 28, 1961, by which time it was paved north of Eau Claire.^[3]

Highway 656
Route information
Maintained by theMinistry of Transportation of Ontario
Length	3.7 km[1] (2.3 mi)
Existed	April 8, 1965[4]–present
Major junctions
South end	Highway 533 nearMattawa
North end	Otto Holden Generating Station
Location
Country	Canada
Province	Ontario
Divisions	Nipissing District
Towns	Mattawan Township
Highway system
Ontario provincial highways Current Former 400-series
←Highway 655 →Highway 657

Secondary Highway 656, commonly referred to asHighway 656, is asecondary highway in theCanadian province ofOntario. It provides access to theOtto Holden Generating Station on theOttawa River from a junction withHighway 533 located just north ofMattawa, a distance of 3.7 kilometres (2.3 mi). It was established on April 8, 1965.^[4]

• Ontario secondary highways
• Roads in Nipissing District

• Articles with short description
• Short description is different from Wikidata
• Infobox road maps tracking category
• Infobox road instances in Ontario