Ontario Highway 9

Highway 9
Route information
Maintained by Ministry of Transportation of Ontario
Length	119.0 km[1] (73.9 mi)
Existed	February 26, 1920[2]–present
Western segment
West end	Highway 21 – Kincardine
East end	Highway 23 / Highway 89 – Harriston
Eastern segment
West end	Highway 10 – Orangeville
East end	Highway 400 (near Newmarket)
Location
Country	Canada
Province	Ontario
Towns	Kincardine, Walkerton, Mildmay, Clifford, Harriston, Orangeville, Mono Mills
Highway system
Ontario provincial highways Current Former 400-series
← Highway 8 → Highway 10

King's Highway 9, commonly referred to as Highway 9, is a provincially maintained highway in the Canadian province of Ontario. Highway 9 has been divided into two segments since January 1, 1998, when the segment between Harriston and Orangeville was downloaded to the various counties in which it resided. The western segment of the highway begins at Highway 21 in Kincardine, near the shores of Lake Huron. It travels 73 km (45 mi) to the junction of Highway 23 and Highway 89 in Harriston. The central segment is now known as Wellington County Road 109 and Dufferin County Road 109. At Highway 10 in Orangeville, Highway 9 resumes and travels east to Highway 400. The highway once continued east to Yonge Street in Newmarket, but is now known as York Regional Road 31.

Highway 9 was first assumed into the provincial highway system on February 26, 1920 as the Arthur–Kincardine Road. It was extended to Cookstown in the early 1930s via Orangeville and Shelburne, creating a short lived concurrency with Highway 10. In 1937, the road between Orangeville and Schomberg was designated part of Highway 9. The concurrency was discontinued, and the remainder became Highway 89. In 1965, Highway 9 was extended to Newmarket along Davis Drive.