Ontario Highway 634

Highway 634
Route information
Maintained by Ministry of Transportation of Ontario
Length	80.1 km[1] (49.8 mi)
History	Opened July 21, 1966[2] (as Highway 807) renumbered in 1977 (as Highway 634)
Major junctions
South end	Highway 11 / TCH in Smooth Rock Falls
North end	Abitibi Canyon Generating Station at Abitibi Canyon
Location
Country	Canada
Province	Ontario
Districts	Cochrane District
Major cities	Smooth Rock Falls, Fraserdale
Highway system
Ontario provincial highways Current Former 400-series
← Highway 633 → Highway 636
Former provincial highways Highway 635  →

Secondary Highway 634, commonly referred to as Highway 634, is a remote highway in Northern Ontario that connects Highway 11 in Smooth Rock Falls to the Abitibi Canyon Generating Station in the community of Abitibi Canyon, Ontario. It is the second highway in Ontario to be designated Highway 634, with the original Highway 634 being near Sudbury. The current routing was at first designated as Highway 807, but was renumbered in 1977. The road was re-aligned around the eastern part of Smooth Rock Falls in the mid-1990s.

As of 2019, the entire route is paved. Services along the route are only available within Smooth Rock Falls. Two additional communities exist along Highway 634: Brownrigg and Fraserdale.