Lac des Trois Îles is a Lake located in Lac-Pythonga; La Vallée-de-la-Gatineau, Quebec and has an elevation of 349 meters.

• Latitude: 46° 33' 2'' North   (decimal: 46.5505556)
• Longitude: 76° 26' 29'' West   (decimal: -76.4413889)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 349 meters
• Location: Lac-Pythonga; La Vallée-de-la-Gatineau
• Atlas of Canada Locator Map: Lac des Trois Îles
• GPS Coordinate Locator Map: Lac des Trois Îles Lat/Long