Lac Gaillarbois is a Lake located in Rivière-Mouchalagane; Caniapiscau, Quebec and has an elevation of 523 meters.

• Latitude: 51° 58' 59'' North   (decimal: 51.9830555)
• Longitude: 67° 26' 10'' West   (decimal: -67.4361110)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 523 meters
• Location: Rivière-Mouchalagane; Caniapiscau
• Atlas of Canada Locator Map: Lac Gaillarbois
• GPS Coordinate Locator Map: Lac Gaillarbois Lat/Long