Lac à Bidou is a Lake located in Sainte-Lucie-de-Beauregard; Montmagny, Quebec.

• Latitude: 46° 44' 12'' North   (decimal: 46.7366912)
• Longitude: 70° 1' 6'' West   (decimal: -70.0183976)
• Topography Feature Category: Lake
• Geographical Feature: Étang
• Canadian Province/Territory: Quebec
• Location: Sainte-Lucie-de-Beauregard; Montmagny
• Atlas of Canada Locator Map: Lac à Bidou
• GPS Coordinate Locator Map: Lac à Bidou Lat/Long