King's Highway 93, commonly referred to as Highway 93, is a provincially maintained highway in the Canadian province of Ontario. Located entirely within Simcoe County, the highway extends 23.9 kilometres (14.9 mi) from an interchange with Highway 400 in Springwater, just south of the community of Hillsdale, to an intersection with Highway 12 at the town limits of Midland. The route follows the historic Penetanguishene Road, an early colonization road which served to connect Lake Simcoe with Georgian Bay, thus providing an overland route from Lake Huron to Lake Ontario via Yonge Street.

Simcoe County is located in the central portion of Southern Ontario, Canada. The county is just north of the Greater Toronto Area, stretching from the shores of Lake Simcoe in the east to Georgian Bay in the west. Simcoe County forms part of the Greater Golden Horseshoe area, a densely populated and industrialized region, centred on the Greater Toronto Area.