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

• Latitude: 48° 52' 15'' North   (decimal: 48.8708740)
• Longitude: 70° 53' 13'' West   (decimal: -70.8870210)
• 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 Grappin
• GPS Coordinate Locator Map: Lac du Grappin Lat/Long