Lac Séguin is a Lake located in Lac-Ashuapmushuan; Le Domaine-du-Roy, Quebec and has an elevation of 441 meters.

• Latitude: 48° 8' 7'' North   (decimal: 48.1352778)
• Longitude: 72° 35' 52'' West   (decimal: -72.5977778)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 441 meters
• Location: Lac-Ashuapmushuan; Le Domaine-du-Roy
• Atlas of Canada Locator Map: Lac Séguin
• GPS Coordinate Locator Map: Lac Séguin Lat/Long