Troisième lac Boswell is a Lake located in La Tuque; Le Haut-Saint-Maurice, Quebec.

• Latitude: 47° 19' 17'' North   (decimal: 47.3213889)
• Longitude: 72° 17' 6'' West   (decimal: -72.2849999)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: La Tuque; Le Haut-Saint-Maurice
• Atlas of Canada Locator Map: Troisième lac Boswell
• GPS Coordinate Locator Map: Troisième lac Boswell Lat/Long