Lac Blanc or Blanc Lake may refer to:

Blanc Lake (Saint-Ubalde), a lake in Saint-Ubalde, Quebec, Canada Lac Blanc (Chamonix), a lake in Haute-Savoie, France Lac Blanc (Vosges), a lake in Haut-Rhin, France Lac-Blanc, Quebec, an unorganized territory in Quebec, in Canada

See also White Lake (disambiguation)