Ontario Highway 108

Highway 108
Route information
Maintained by the Ministry of Transportation of Ontario
Length	41.6 km[2] (25.8 mi)
Existed	December 19, 1957[1]–present
Tourist routes	Deer Trail
Major junctions
South end	Highway 17 in Serpent River
North end	Highway 639 north of Elliot Lake
Location
Country	Canada
Province	Ontario
Highway system
Ontario provincial highways Current Former 400-series
← Highway 105 → Highway 112
Former provincial highways ←  Highway 107 Highway 109  →

King's Highway 108, commonly referred to as Highway 108, is a provincially maintained highway in the Canadian province of Ontario. Located in the Algoma District, the highway extends for 41.6 kilometres (25.8 mi) from an intersection with Highway 17 west of Serpent River, through the urban core of Elliot Lake, to an intersection with Quirke Mine Road in the north end of the city. The highway continues as Secondary Highway 639 north of Quirke Mine Road.

An earlier but unrelated Highway 108 existed for approximately one year in Toronto, following The Queensway between Highway 27 and the Queen Elizabeth Way. Like most provincial highways in Toronto, it was transferred to Metropolitan Toronto after its formation. The current Highway 108 was designated in 1957 and has remained more-or-less unchanged since then.