Poste Montagnais or Poste des Montagnais is the site of Hydro-Québec's electrical substation Poste Montagnais (English: Montagnais Substation) in the Côte-Nord region, approximately 12 km (7.5 mi) south of the border of Labrador. According to the Canadian Geographical Names Database, part of Natural Resources Canada, it is located in Lac-Jérôme, in the extreme western part of the Minganie Regional County Municipality but is in the Sept-Rivières Regional County Municipality.