Lac Denis is a Lake located in Rivière-aux-Outardes; Manicouagan, Quebec.

• Latitude: 49° 44' 14'' North   (decimal: 49.7372222)
• Longitude: 67° 54' 43'' West   (decimal: -67.9119444)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Rivière-aux-Outardes; Manicouagan
• Atlas of Canada Locator Map: Lac Denis
• GPS Coordinate Locator Map: Lac Denis Lat/Long