Troisième Lac is a Lake located in Blanc-Sablon; Basse-Côte-Nord, Quebec and has an elevation of 25 meters.

• Latitude: 51° 25' 27'' North   (decimal: 51.4242188)
• Longitude: 57° 11' 52'' West   (decimal: -57.1976741)
• Topography Feature Category: Lake
• Geographical Feature: Étang
• Canadian Province/Territory: Quebec
• Elevation: 25 meters
• Location: Blanc-Sablon; Basse-Côte-Nord
• Atlas of Canada Locator Map: Troisième Lac
• GPS Coordinate Locator Map: Troisième Lac Lat/Long