Lac à Rien is a Lake located in Mandeville; D'Autray, Quebec and has an elevation of 384 meters.

• Latitude: 46° 29' 41'' North   (decimal: 46.4947222)
• Longitude: 73° 26' 11'' West   (decimal: -73.4363889)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 384 meters
• Location: Mandeville; D'Autray
• Atlas of Canada Locator Map: Lac à Rien
• GPS Coordinate Locator Map: Lac à Rien Lat/Long