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

• Latitude: 48° 43' 52'' North   (decimal: 48.7311111)
• Longitude: 73° 33' 40'' West   (decimal: -73.5611111)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Lac-Ashuapmushuan; Le Domaine-du-Roy
• Atlas of Canada Locator Map: Lac Fay
• GPS Coordinate Locator Map: Lac Fay Lat/Long