Lac du Castor is a Lake located in Sainte-Brigitte-de-Laval; La Jacques-Cartier, Quebec.

• Latitude: 47° 4' 50'' North   (decimal: 47.0805556)
• Longitude: 71° 7' 16'' West   (decimal: -71.1211111)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Sainte-Brigitte-de-Laval; La Jacques-Cartier
• Atlas of Canada Locator Map: Lac du Castor
• GPS Coordinate Locator Map: Lac du Castor Lat/Long