Lac de l'Os is a Lake located in Lac-Ashuapmushuan; Le Domaine-du-Roy, Quebec and has an elevation of 423 meters.

• Latitude: 49° 46' 14'' North   (decimal: 49.7705556)
• Longitude: 73° 56' 30'' West   (decimal: -73.9416667)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 423 meters
• Location: Lac-Ashuapmushuan; Le Domaine-du-Roy
• Atlas of Canada Locator Map: Lac de l'Os
• GPS Coordinate Locator Map: Lac de l'Os Lat/Long