Gertrude Island is a Island located in Manitoulin, Ontario and has an elevation of 177 meters.

• Latitude: 45° 55' 22'' North   (decimal: 45.9227777)
• Longitude: 82° 46' 27'' West   (decimal: -82.7741666)
• Topography Feature Category: Island
• Geographical Feature: Island
• Canadian Province/Territory: Ontario
• Elevation: 177 meters
• Location: Manitoulin
• Atlas of Canada Locator Map: Gertrude Island
• GPS Coordinate Locator Map: Gertrude Island Lat/Long