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

• Latitude: 48° 37' 10'' North   (decimal: 48.6194444)
• Longitude: 70° 26' 57'' West   (decimal: -70.4491667)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Mont-Valin; Le Fjord-du-Saguenay
• Atlas of Canada Locator Map: Lac Grand-Père
• GPS Coordinate Locator Map: Lac Grand-Père Lat/Long