Carleton is a provincial electoral district for the Legislative Assembly of New Brunswick, Canada.

Carleton was a federal and provincial electoral district in Ontario, Canada, represented in the Canadian House of Commons from 1867 to 1968, and in the Legislative Assembly of Ontario from 1867 to 1987. It was represented in the Legislative Assembly of Upper Canada from 1821 to 1840 and in the Legislative Assembly of the Province of Canada from 1841 until 1866.