Lac à Marc is a Lake located in Les Éboulements; Charlevoix, Quebec.

• Latitude: 47° 31' 18'' North   (decimal: 47.5216667)
• Longitude: 70° 22' 48'' West   (decimal: -70.38)
• Topography Feature Category: Lake
• Geographical Feature: Lac artificiel
• Canadian Province/Territory: Quebec
• Location: Les Éboulements; Charlevoix
• Atlas of Canada Locator Map: Lac à Marc
• GPS Coordinate Locator Map: Lac à Marc Lat/Long