Lac à Dyne is a Lake located in Rivière-Éternité; Le Fjord-du-Saguenay, Quebec.

• Latitude: 48° 8' 53'' North   (decimal: 48.1480556)
• Longitude: 70° 33' 31'' West   (decimal: -70.5586111)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Rivière-Éternité; Le Fjord-du-Saguenay
• Atlas of Canada Locator Map: Lac à Dyne
• GPS Coordinate Locator Map: Lac à Dyne Lat/Long