Perth—Wellington is a federal and provincial electoral district in Ontario, Canada, that has been represented in the Canadian House of Commons since 2004. It elected a member to the Legislative Assembly of Ontario in the 2007 provincial election.
It was created in 2003 from parts of Dufferin—Peel—Wellington—Grey, Perth—Middlesex and Waterloo—Wellington ridings. It consists of the County of Perth, and the Town of Minto and the townships of Mapleton and Wellington North in the County of Wellington.
|Ontario electoral reform referendum, 2007|
|First Past the Post||25480||67.6%|
|Mixed member proportional||12218||32.4%|