Lac à Marcouiller is a Lake located in Saint-Mathieu-du-Parc; Maskinongé, Quebec.

• Latitude: 46° 36' 49'' North   (decimal: 46.6136111)
• Longitude: 72° 53' 29'' West   (decimal: -72.8913888)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Location: Saint-Mathieu-du-Parc; Maskinongé
• Atlas of Canada Locator Map: Lac à Marcouiller
• GPS Coordinate Locator Map: Lac à Marcouiller Lat/Long