Lac Sac à Commis is a Lake located in Lac-Legendre; Matawinie, Quebec and has an elevation of 426 meters.

• Latitude: 46° 34' 44'' North   (decimal: 46.5789302)
• Longitude: 74° 13' 46'' West   (decimal: -74.2293267)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 426 meters
• Location: Lac-Legendre; Matawinie
• Atlas of Canada Locator Map: Lac Sac à Commis
• GPS Coordinate Locator Map: Lac Sac à Commis Lat/Long