Fortyfive Island is a Island located in Rainy River, Ontario and has an elevation of 361 meters.

• Latitude: 48° 20' 55'' North   (decimal: 48.3486111)
• Longitude: 92° 12' 52'' West   (decimal: -92.2144444)
• Topography Feature Category: Island
• Geographical Feature: Island
• Canadian Province/Territory: Ontario
• Elevation: 361 meters
• Location: Rainy River
• Atlas of Canada Locator Map: Fortyfive Island
• GPS Coordinate Locator Map: Fortyfive Island Lat/Long