Lac à Mathieu is a Lake located in Dixville; Coaticook, Quebec and has an elevation of 321 meters.

• Latitude: 45° 4' 57'' North   (decimal: 45.0825448)
• Longitude: 71° 46' 3'' West   (decimal: -71.7675904)
• Topography Feature Category: Lake
• Geographical Feature: Étang
• Canadian Province/Territory: Quebec
• Elevation: 321 meters
• Location: Dixville; Coaticook
• Atlas of Canada Locator Map: Lac à Mathieu
• GPS Coordinate Locator Map: Lac à Mathieu Lat/Long