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

• Latitude: 49° 48' 56'' North   (decimal: 49.8155556)
• Longitude: 69° 5' 44'' West   (decimal: -69.0955556)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Rivière-aux-Outardes; Manicouagan
• Atlas of Canada Locator Map: Lac Perdu
• GPS Coordinate Locator Map: Lac Perdu Lat/Long