Half Sphere Island is a Island located in Manitoulin, Ontario and has an elevation of 180 meters.

• Latitude: 45° 59' 13'' North   (decimal: 45.9869444)
• Longitude: 81° 10' 6'' West   (decimal: -81.1683333)
• Topography Feature Category: Island
• Geographical Feature: Island
• Canadian Province/Territory: Ontario
• Elevation: 180 meters
• Location: Manitoulin
• Atlas of Canada Locator Map: Half Sphere Island
• GPS Coordinate Locator Map: Half Sphere Island Lat/Long