Lac Mésy is a Lake located in Hébertville; Lac-Saint-Jean-Est, Quebec.

• Latitude: 48° 15' 33'' North   (decimal: 48.2591667)
• Longitude: 71° 39' 49'' West   (decimal: -71.6636111)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Hébertville; Lac-Saint-Jean-Est
• GPS Coordinate Locator Map: Lac Mésy Lat/Long