Lac Lyonnais is a Lake located in Lac-Chicobi; Abitibi, Quebec and has an elevation of 335 meters.

• Latitude: 48° 45' 37'' North   (decimal: 48.7602777)
• Longitude: 78° 33' 45'' West   (decimal: -78.5624999)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 335 meters
• Location: Lac-Chicobi; Abitibi
• Atlas of Canada Locator Map: Lac Lyonnais
• GPS Coordinate Locator Map: Lac Lyonnais Lat/Long