Lac Langlois is a Lake located in Montcerf-Lytton; La Vallée-de-la-Gatineau, Quebec.

• Latitude: 46° 26' 7'' North   (decimal: 46.4352778)
• Longitude: 76° 9' 7'' West   (decimal: -76.1519444)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Montcerf-Lytton; La Vallée-de-la-Gatineau
• GPS Coordinate Locator Map: Lac Langlois Lat/Long