Lac-Walker is an unorganized territory in the Côte-Nord region of Quebec, Canada. It makes up more than half of the Sept-Rivières Regional County Municipality.
The eponymous Lake Walker, named after Hovenden Walker, is about long and has steep rock walls. It is located in the Port-Cartier-Sept-ÃÂles Wildlife Reserve, that offers many outdoor recreation activities.
Private dwellings occupied by usual residents (2021): 50 (total dwellings: 59)