Saint-Antoine-du-Lac-Saint-Jean is a Unincorporated area located in Notre-Dame-de-Lorette; Maria-Chapdelaine, Quebec.

• Latitude: 49° 4' 42'' North   (decimal: 49.0783333)
• Longitude: 72° 21' 23'' West   (decimal: -72.3563889)
• Topography Feature Category: Unincorporated area
• Geographical Feature: Hameau
• Canadian Province/Territory: Quebec
• Location: Notre-Dame-de-Lorette; Maria-Chapdelaine
• GPS Coordinate Locator Map: Saint-Antoine-du-Lac-Saint-Jean Lat/Long