Lac Ernest is a Lake located in Rivière-Kipawa; Témiscamingue, Quebec.

• Latitude: 47° 6' 48'' North   (decimal: 47.1133950)
• Longitude: 78° 17' 0'' West   (decimal: -78.2833842)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Rivière-Kipawa; Témiscamingue
• Atlas of Canada Locator Map: Lac Ernest
• GPS Coordinate Locator Map: Lac Ernest Lat/Long