Troisième Lac is a Lake located in Lac-Ministuk; Le Fjord-du-Saguenay, Quebec and has an elevation of 344 meters.

• Latitude: 48° 16' 35'' North   (decimal: 48.2763889)
• Longitude: 71° 21' 3'' West   (decimal: -71.3508333)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 344 meters
• Location: Lac-Ministuk; Le Fjord-du-Saguenay
• Atlas of Canada Locator Map: Troisième Lac
• GPS Coordinate Locator Map: Troisième Lac Lat/Long