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

• Latitude: 50° 2' 33'' North   (decimal: 50.0425500)
• Longitude: 69° 16' 43'' West   (decimal: -69.2785063)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Rivière-aux-Outardes; Manicouagan
• Atlas of Canada Locator Map: Lac Alien
• GPS Coordinate Locator Map: Lac Alien Lat/Long