Lac Denis is a Lake located in Rivière-Koksoak; Kativik, Quebec.

• Latitude: 57° 45' 52'' North   (decimal: 57.7644444)
• Longitude: 70° 10' 10'' West   (decimal: -70.1694444)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Rivière-Koksoak; Kativik
• Atlas of Canada Locator Map: Lac Denis
• GPS Coordinate Locator Map: Lac Denis Lat/Long