Lac Brun is a Lake located in L'Ascension-de-Notre-Seigneur; Lac-Saint-Jean-Est, Quebec and has an elevation of 166 meters.

• Latitude: 48° 43' 59'' North   (decimal: 48.7330556)
• Longitude: 71° 43' 17'' West   (decimal: -71.7213889)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 166 meters
• Location: L'Ascension-de-Notre-Seigneur; Lac-Saint-Jean-Est
• Atlas of Canada Locator Map: Lac Brun
• GPS Coordinate Locator Map: Lac Brun Lat/Long