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

• Latitude: 45° 1' 55'' North   (decimal: 45.0319444)
• Longitude: 76° 12' 25'' West   (decimal: -76.2069444)
• Topography Feature Category: Island
• Geographical Feature: Island
• Canadian Province/Territory: Ontario
• Elevation: 131 meters
• Location: Lanark
• Atlas of Canada Locator Map: Greig Island
• GPS Coordinate Locator Map: Greig Island Lat/Long