Newtonville is a dispersed rural community in the Municipality of Clarington, Durham Region, Ontario, Canada.

[1][2] 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.

Newtonville's first Post office opened in 1835 when the village was known as both "Clarke" (named after Clarke Township, which it was part of) and "Newton".

This Ontario geographical article about a location in the Golden Horseshoe is a stub.