Lac Lost is a Lake located in Lac-De La Bidière; Antoine-Labelle, Quebec.

• Latitude: 47° 34' 13'' North   (decimal: 47.5702778)
• Longitude: 75° 9' 8'' West   (decimal: -75.1522222)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Lac-De La Bidière; Antoine-Labelle
• GPS Coordinate Locator Map: Lac Lost Lat/Long