Lac du Lamantin is a Lake located in Mont-Valin; Le Fjord-du-Saguenay, Quebec.

• Latitude: 49° 10' 13'' North   (decimal: 49.1702778)
• Longitude: 70° 23' 44'' West   (decimal: -70.3955555)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Mont-Valin; Le Fjord-du-Saguenay
• Atlas of Canada Locator Map: Lac du Lamantin
• GPS Coordinate Locator Map: Lac du Lamantin Lat/Long