Lac Boom is a Lake located in Lac-Marguerite; Antoine-Labelle, Quebec.

• Latitude: 47° 6' 21'' North   (decimal: 47.1058333)
• Longitude: 76° 2' 38'' West   (decimal: -76.0438889)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Lac-Marguerite; Antoine-Labelle
• Atlas of Canada Locator Map: Lac Boom
• GPS Coordinate Locator Map: Lac Boom Lat/Long