Troisième Lac is a Lake located in Bonne-Espérance; Basse-Côte-Nord, Quebec.

• Latitude: 51° 31' 57'' North   (decimal: 51.5325530)
• Longitude: 57° 48' 11'' West   (decimal: -57.8029683)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Bonne-Espérance; Basse-Côte-Nord
• Atlas of Canada Locator Map: Troisième Lac
• GPS Coordinate Locator Map: Troisième Lac Lat/Long