Lac à Louis is a Lake located in Ruisseau-des-Mineurs; La Matapédia, Quebec.

• Latitude: 48° 33' 25'' North   (decimal: 48.5569444)
• Longitude: 66° 34' 00'' West   (decimal: -66.5666666)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Ruisseau-des-Mineurs; La Matapédia
• Atlas of Canada Locator Map: Lac à Louis
• GPS Coordinate Locator Map: Lac à Louis Lat/Long