Lac Saint-Jean is a Lake located in Lac-Pikauba; Charlevoix, Quebec.

• Latitude: 47° 37' 45'' North   (decimal: 47.6291667)
• Longitude: 70° 52' 18'' West   (decimal: -70.8716667)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Lac-Pikauba; Charlevoix
• GPS Coordinate Locator Map: Lac Saint-Jean Lat/Long