Ontario Highway 51

King's Highway 51
Kent Bridge Road, Wildwood Line Chatham–Kent Road 15
Route information
Maintained by the City of Chatham–Kent
Length	5.8 km[1] (3.6 mi)
Existed	April 9, 1970[2]–April 1, 1997[3]
Major junctions
South end	Rondeau Provincial Park (Evangeline Street)
North end	Municipal Road 3 (Talbot Road)
Location
Country	Canada
Province	Ontario
Divisions	Chatham–Kent
Towns	New Scotland, Rondeau Park
Highway system
Ontario provincial highways Current Former 400-series
← Highway 49 → Highway 58
Former provincial highways ←  Highway 50 Highway 52  →

King's Highway 51, commonly referred to as Highway 51, was a provincially maintained highway in the Canadian province of Ontario that connected Highway 3 in Eatonville with Rondeau Provincial Park. An earlier designation existed south of Orangeville, connecting Highway 24 with Highway 10 in Caledon Village. This iteration was assumed in 1938, but later renumbered as Highway 24 In 1961. The more recent incarnation of the route number was assumed in 1970, but then decommissioned in 1997 and transferred to what is now the city of Chatham-Kent.