Lac à Gillis is a Lake located in Colombier; La Haute-Côte-Nord, Quebec.

• Latitude: 48° 54' 30'' North   (decimal: 48.9083676)
• Longitude: 68° 58' 4'' West   (decimal: -68.9678263)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Colombier; La Haute-Côte-Nord
• Atlas of Canada Locator Map: Lac à Gillis
• GPS Coordinate Locator Map: Lac à Gillis Lat/Long