Marys Lake is a Lake located in Renfrew, Ontario and has an elevation of 253 meters.

• Latitude: 46° 9' 4'' North   (decimal: 46.1511111)
• Longitude: 77° 58' 47'' West   (decimal: -77.9797222)
• Topography Feature Category: Lake
• Geographical Feature: Lake
• Canadian Province/Territory: Ontario
• Elevation: 253 meters
• Location: Renfrew
• Atlas of Canada Locator Map: Marys Lake
• GPS Coordinate Locator Map: Marys Lake Lat/Long