Lac Mathilde is a Lake located in Rivière-Mistassini; Maria-Chapdelaine, Quebec and has an elevation of 457 meters.

• Latitude: 50° 19' 54'' North   (decimal: 50.3316667)
• Longitude: 72° 35' 51'' West   (decimal: -72.5975)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 457 meters
• Location: Rivière-Mistassini; Maria-Chapdelaine
• Atlas of Canada Locator Map: Lac Mathilde
• GPS Coordinate Locator Map: Lac Mathilde Lat/Long