Lac Mario is a Lake located in Lac-au-Brochet; La Haute-Côte-Nord, Quebec.

• Latitude: 49° 10' 3'' North   (decimal: 49.1675372)
• Longitude: 69° 47' 22'' West   (decimal: -69.7895165)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Lac-au-Brochet; La Haute-Côte-Nord
• Atlas of Canada Locator Map: Lac Mario
• GPS Coordinate Locator Map: Lac Mario Lat/Long