Lac Perdu is a Lake located in Lac-Pikauba; Charlevoix, Quebec.

• Latitude: 47° 47' 25'' North   (decimal: 47.7902778)
• Longitude: 70° 41' 12'' West   (decimal: -70.6866667)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Lac-Pikauba; Charlevoix
• Atlas of Canada Locator Map: Lac Perdu
• GPS Coordinate Locator Map: Lac Perdu Lat/Long