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

• Latitude: 46° 51' 25'' North   (decimal: 46.8569837)
• Longitude: 73° 50' 48'' West   (decimal: -73.8465337)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Baie-de-la-Bouteille; Matawinie
• GPS Coordinate Locator Map: Lac Long Lat/Long