Lac du Petit Achigan is a Lake located in Lac-Nilgaut; Pontiac, Quebec.

• Latitude: 46° 12' 30'' North   (decimal: 46.2083333)
• Longitude: 77° 20' 10'' West   (decimal: -77.3361111)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Lac-Nilgaut; Pontiac
• GPS Coordinate Locator Map: Lac du Petit Achigan Lat/Long