Lac Gus is a Lake located in Lac-Pythonga; La Vallée-de-la-Gatineau, Quebec.

• Latitude: 46° 45' 35'' North   (decimal: 46.7597222)
• Longitude: 76° 43' 22'' West   (decimal: -76.7227778)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Lac-Pythonga; La Vallée-de-la-Gatineau
• Atlas of Canada Locator Map: Lac Gus
• GPS Coordinate Locator Map: Lac Gus Lat/Long