Brunswick House First Nation is an Ojibway-Cree First Nations in the Canadian province of Ontario, located in the Sudbury District, 157 km (97.6 mi) northeast of Sault Ste Marie, Ontario.
Originally, the Band had reserved for themselves the 17,280 acres (6,993.0 ha) New Brunswick House 76 Indian Reserve, but on June 1, 1925, the Ontario government established the Chapleau Game Preserve which surrounded (and did not explicitly exclude) the New Brunswick House reserve and was closed to all hunting and trapping.
The Band moved to its present reserve at Duck Lake 76B Indian Reserve after 642 acres (259.8 ha) of the Mountbatten 76A were exchanged in 1973 for an equivalent area of land closer to Chapleau, Ontario.
Brunswick House First Nation elects their leaders through the Act Electoral System, consisting of a Chief and six Councillors.
Brunswick House First Nation is a member of the Wabun Tribal Council, a Regional Chiefs' Council, which in turn is member of the Nishnawbe Aski Nation, a Tribal Political Organization.