Troisième ruisseau Lacourse is a River located in Lac-Despinassy; Abitibi, Quebec.

• Latitude: 48° 44' 53'' North   (decimal: 48.7480556)
• Longitude: 77° 25' 21'' West   (decimal: -77.4225)
• Topography Feature Category: River
• Geographical Feature: Ruisseau
• Canadian Province/Territory: Quebec
• Location: Lac-Despinassy; Abitibi
• Atlas of Canada Locator Map: Troisième ruisseau Lacourse
• GPS Coordinate Locator Map: Troisième ruisseau Lacourse Lat/Long