Lac Guy is a Lake located in Baie-de-la-Bouteille; Matawinie, Quebec.

• Latitude: 46° 54' 18'' North   (decimal: 46.9050425)
• Longitude: 73° 58' 37'' West   (decimal: -73.9768147)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Baie-de-la-Bouteille; Matawinie
• Atlas of Canada Locator Map: Lac Guy
• GPS Coordinate Locator Map: Lac Guy Lat/Long