Lac de la Truite Grise is a Lake located in Baie-Obaoca; Matawinie, Quebec.

• Latitude: 47° 37' 59'' North   (decimal: 47.6331219)
• Longitude: 74° 37' 29'' West   (decimal: -74.6245918)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Baie-Obaoca; Matawinie
• Atlas of Canada Locator Map: Lac de la Truite Grise
• GPS Coordinate Locator Map: Lac de la Truite Grise Lat/Long