Newtonville is a dispersed rural community in the Municipality of Clarington, Durham Region, Ontario, Canada. It is located about 30 kilometres (19 mi) east of Oshawa and about 10 kilometres (6.2 mi) west of Port Hope on the former Highway 2. Newtonville is the most easterly community in Clarington (and in Durham Region), and therefore forms the eastern end of the Greater Toronto Area. The community was formerly part of the southeastern part of the township of Clarke until 1973.