Lac Louis-Marie is a Lake located in Rivière-Mistassini; Maria-Chapdelaine, Quebec.

• Latitude: 49° 57' 35'' North   (decimal: 49.9597874)
• Longitude: 72° 12' 31'' West   (decimal: -72.2087022)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Rivière-Mistassini; Maria-Chapdelaine
• Atlas of Canada Locator Map: Lac Louis-Marie
• GPS Coordinate Locator Map: Lac Louis-Marie Lat/Long