Willis Island is a Island located in Lanark, Ontario and has an elevation of 131 meters.

• Latitude: 45° 3' 38'' North   (decimal: 45.0605555)
• Longitude: 76° 10' 21'' West   (decimal: -76.1725000)
• Topography Feature Category: Island
• Geographical Feature: Island
• Canadian Province/Territory: Ontario
• Elevation: 131 meters
• Location: Lanark
• Atlas of Canada Locator Map: Willis Island
• GPS Coordinate Locator Map: Willis Island Lat/Long