Lac Grillon is a Lake located in Lac-au-Brochet; La Haute-Côte-Nord, Quebec and has an elevation of 490 meters.

• Latitude: 49° 12' 9'' North   (decimal: 49.2025)
• Longitude: 69° 23' 24'' West   (decimal: -69.39)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 490 meters
• Location: Lac-au-Brochet; La Haute-Côte-Nord
• Atlas of Canada Locator Map: Lac Grillon
• GPS Coordinate Locator Map: Lac Grillon Lat/Long