Lac du Cygne is a Lake located in Lac-Ashuapmushuan; Le Domaine-du-Roy, Quebec.

• Latitude: 49° 15' 39'' North   (decimal: 49.2608333)
• Longitude: 73° 26' 13'' West   (decimal: -73.4369444)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Lac-Ashuapmushuan; Le Domaine-du-Roy
• GPS Coordinate Locator Map: Lac du Cygne Lat/Long