Lac des Montagnes is a Lake located in Baie-James; Jamésie, Quebec.

• Latitude: 49° 6' 3'' North   (decimal: 49.1008333)
• Longitude: 79° 2' 52'' West   (decimal: -79.0477777)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Baie-James; Jamésie
• Atlas of Canada Locator Map: Lac des Montagnes
• GPS Coordinate Locator Map: Lac des Montagnes Lat/Long