Lac au Diable is a Lake located in Sainte-Madeleine-de-la-Rivière-Madeleine; La Haute-Gaspésie, Quebec and has an elevation of 275 meters.

• Latitude: 49° 10' 5'' North   (decimal: 49.1681008)
• Longitude: 65° 23' 48'' West   (decimal: -65.3965842)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 275 meters
• Location: Sainte-Madeleine-de-la-Rivière-Madeleine; La Haute-Gaspésie
• Atlas of Canada Locator Map: Lac au Diable
• GPS Coordinate Locator Map: Lac au Diable Lat/Long