Lac Allen is a Lake located in Lac-Nilgaut; Pontiac, Quebec.

• Latitude: 46° 54' 52'' North   (decimal: 46.9145021)
• Longitude: 77° 44' 24'' West   (decimal: -77.7400240)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Lac-Nilgaut; Pontiac
• Atlas of Canada Locator Map: Lac Allen
• GPS Coordinate Locator Map: Lac Allen Lat/Long