Lac Dunn is a Lake located in Lac-Nilgaut; Pontiac, Quebec and has an elevation of 239 meters.

• Latitude: 46° 14' 13'' North   (decimal: 46.2369444)
• Longitude: 77° 0' 59'' West   (decimal: -77.0163889)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 239 meters
• Location: Lac-Nilgaut; Pontiac
• Atlas of Canada Locator Map: Lac Dunn
• GPS Coordinate Locator Map: Lac Dunn Lat/Long