Lac des Sirex is a Lake located in Notre-Dame-du-Laus; Antoine-Labelle, Quebec and has an elevation of 297 meters.

• Latitude: 46° 8' 28'' North   (decimal: 46.1411605)
• Longitude: 75° 13' 24'' West   (decimal: -75.2232594)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 297 meters
• Location: Notre-Dame-du-Laus; Antoine-Labelle
• Atlas of Canada Locator Map: Lac des Sirex
• GPS Coordinate Locator Map: Lac des Sirex Lat/Long