Lac Défait is a Lake located in Lac-Moselle; La Vallée-de-la-Gatineau, Quebec.

• Latitude: 47° 43' 33'' North   (decimal: 47.7259071)
• Longitude: 75° 39' 4'' West   (decimal: -75.6510139)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Lac-Moselle; La Vallée-de-la-Gatineau
• Atlas of Canada Locator Map: Lac Défait
• GPS Coordinate Locator Map: Lac Défait Lat/Long