Lac Étroit is a Lake located in Rivière-Mistassini; Maria-Chapdelaine, Quebec and has an elevation of 458 meters.

• Latitude: 50° 20' 57'' North   (decimal: 50.3491667)
• Longitude: 72° 41' 16'' West   (decimal: -72.6877778)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 458 meters
• Location: Rivière-Mistassini; Maria-Chapdelaine
• Atlas of Canada Locator Map: Lac Étroit
• GPS Coordinate Locator Map: Lac Étroit Lat/Long