Kingston Road is a major historic arterial road in Toronto and Durham Region, Ontario. It is the southernmost major (mainly) east-west road in the eastern portion of Toronto, specifically in the district of Scarborough, and runs east to Ajax in Durham. Due to its diagonal course near the shore of Lake Ontario, the street is the terminus of many arterial roads in eastern Toronto, both eastโwest and north-south, with a few continuing for a short distance after as minor residential streets. However Lawrence Avenue continues as a major arterial for a considerable distance beyond it.
Until 1998, it formed a portion of Highway 2. The name of the street is derived from Kingston, Ontario as the road was the primary route used to travel from Toronto to the settlements east of it situated along the shores of Lake Ontario; in the west end of Kingston, the road was referred to as the York Road (referring to Toronto) until at least 1908, and is today named Princess Street.