Algoma-Manitoulin is a provincial electoral district in Ontario, Canada, that has been represented in the Legislative Assembly of Ontario since 1934. This northern Ontario riding spreads the smallest population in a provincial riding over the third largest land area.
It stretches from Manitoulin Island in the south to north of Manitouwadge and Hornepayne, and from Lake Superior in west to the Nickel Belt and Sudbury ridings in east. It also includes the outer fringes of Sault Ste. Marie, as well as vast tracts in which timber and mining are the main industries.
The riding’s economic base is rooted in manufacturing, pulp and paper, and mining, including uranium. Elliot Lake, the uranium centre, is the largest single urban centre.
There are several native reserves in the riding and the Anishnawbek population is the third highest in the province, according to the 1996 census.
The riding was created prior to the 1999 general election through the amalgamation of the former ridings of Algoma and Algoma-Manitoulin, plus parts of the Nickel Belt and Lake Nipigon ridings.