Lac Défunt is a Lake located in Lac-Douaire; Antoine-Labelle, Quebec.

• Latitude: 47° 16' 21'' North   (decimal: 47.2725)
• Longitude: 75° 44' 45'' West   (decimal: -75.7458333)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Lac-Douaire; Antoine-Labelle
• Atlas of Canada Locator Map: Lac Défunt
• GPS Coordinate Locator Map: Lac Défunt Lat/Long