Clarke Island is a Island located in Lanark, Ontario.

• Latitude: 44° 44' 52'' North   (decimal: 44.7477777)
• Longitude: 76° 14' 5'' West   (decimal: -76.2347222)
• Topography Feature Category: Island
• Geographical Feature: Island
• Canadian Province/Territory: Ontario
• Location: Lanark
• Atlas of Canada Locator Map: Clarke Island
• GPS Coordinate Locator Map: Clarke Island Lat/Long