Petit lac du Bec is a Lake located in Lac-Ministuk; Le Fjord-du-Saguenay, Quebec.

• Latitude: 48° 11' 22'' North   (decimal: 48.1894444)
• Longitude: 71° 2' 26'' West   (decimal: -71.0405556)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Lac-Ministuk; Le Fjord-du-Saguenay
• Atlas of Canada Locator Map: Petit lac du Bec
• GPS Coordinate Locator Map: Petit lac du Bec Lat/Long