Troisième lac de la Tour is a Lake located in Lac-Matawin; Matawinie, Quebec.

• Latitude: 46° 55' 25'' North   (decimal: 46.9236111)
• Longitude: 74° 11' 8'' West   (decimal: -74.1855556)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Lac-Matawin; Matawinie
• GPS Coordinate Locator Map: Troisième lac de la Tour Lat/Long