Petit-Lac-Lanthier is a Unincorporated area located in Rivière-Rouge; Antoine-Labelle, Quebec and has an elevation of 255 meters.

• Latitude: 46° 26' 30'' North   (decimal: 46.4417137)
• Longitude: 74° 50' 39'' West   (decimal: -74.8440733)
• Topography Feature Category: Unincorporated area
• Geographical Feature: Centre de villégiature
• Canadian Province/Territory: Quebec
• Elevation: 255 meters
• Location: Rivière-Rouge; Antoine-Labelle
• Atlas of Canada Locator Map: Petit-Lac-Lanthier
• GPS Coordinate Locator Map: Petit-Lac-Lanthier Lat/Long