Lac Cyr is a Lake located in Sainte-Sophie; La Rivière-du-Nord, Quebec and has an elevation of 144 meters.

• Latitude: 45° 49' 31'' North   (decimal: 45.8252777)
• Longitude: 73° 58' 47'' West   (decimal: -73.9797222)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 144 meters
• Location: Sainte-Sophie; La Rivière-du-Nord
• Atlas of Canada Locator Map: Lac Cyr
• GPS Coordinate Locator Map: Lac Cyr Lat/Long