Lac Alphonse-Dubé is a Lake located in Lac-Huron; Rimouski-Neigette, Quebec.

• Latitude: 48° 6' 6'' North   (decimal: 48.1017124)
• Longitude: 68° 0' 34'' West   (decimal: -68.0094543)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Lac-Huron; Rimouski-Neigette
• Atlas of Canada Locator Map: Lac Alphonse-Dubé
• GPS Coordinate Locator Map: Lac Alphonse-Dubé Lat/Long