Lac à Mac is a Lake located in Rivière-Mistassini; Maria-Chapdelaine, Quebec and has an elevation of 243 meters.

• Latitude: 49° 29' 4'' North   (decimal: 49.4844444)
• Longitude: 72° 4' 37'' West   (decimal: -72.0769444)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 243 meters
• Location: Rivière-Mistassini; Maria-Chapdelaine
• Atlas of Canada Locator Map: Lac à Mac
• GPS Coordinate Locator Map: Lac à Mac Lat/Long