Whitby—Oshawa is a federal and provincial electoral district in Ontario, Canada, that has been represented in the Canadian House of Commons since 2004 and the Legislative Assembly of Ontario since the 2007 provincial election.
It consists of the Town of Whitby and northwestern section of the City of Oshawa (specifically, the portion of the city lying north and west of a line drawn from the western city limit east along King Street West, north along the Oshawa Creek, east along Rossland Road West, north along Simcoe Street North, and east along Winchester Road East to the eastern city limit).
This riding has elected the following Members of Parliament:
|Durham, Oshawa and Whitby—Ajax prior to 2003|
|Ontario electoral reform referendum, 2007|
|First Past the Post||33461||65.9%|
|Mixed member proportional||17306||34.1%|