Lac Montjoie is a Lake located in Lac-Ernest; Antoine-Labelle, Quebec and has an elevation of 265 meters.

• Latitude: 46° 16' 58'' North   (decimal: 46.2828271)
• Longitude: 75° 7' 58'' West   (decimal: -75.1326981)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 265 meters
• Location: Lac-Ernest; Antoine-Labelle
• Atlas of Canada Locator Map: Lac Montjoie
• GPS Coordinate Locator Map: Lac Montjoie Lat/Long