The lac Jacques-Cartier, main source of the Jacques-Cartier River, is a glacial lake located in the Laurentides Wildlife Reserve, about 90 km to the north of the city of Quebec, in the unorganized territory of Lac-Jacques-Cartier, in the La Côte-de-Beaupré Regional County Municipality, in the administrative region of Capitale-Nationale, in the province of Quebec, in Canada. The area around the lake is served by the route 175 which passes on the west shore, for the needs of forestry and recreational tourism activities.