Lac à Foin is a Lake located in Baie-Obaoca; Matawinie, Quebec.

• Latitude: 47° 34' 38'' North   (decimal: 47.5772222)
• Longitude: 74° 14' 42'' West   (decimal: -74.245)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Baie-Obaoca; Matawinie
• Atlas of Canada Locator Map: Lac à Foin
• GPS Coordinate Locator Map: Lac à Foin Lat/Long