Lac du Copain is a Lake located in Rivière-aux-Outardes; Manicouagan, Quebec.

• Latitude: 49° 9' 20'' North   (decimal: 49.1556005)
• Longitude: 68° 51' 23'' West   (decimal: -68.8564355)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Rivière-aux-Outardes; Manicouagan
• Atlas of Canada Locator Map: Lac du Copain
• GPS Coordinate Locator Map: Lac du Copain Lat/Long