Middle Brother Island is a Island located in Frontenac, Ontario and has an elevation of 123 meters.

• Latitude: 44° 26' 17'' North   (decimal: 44.4380555)
• Longitude: 76° 25' 28'' West   (decimal: -76.4244444)
• Topography Feature Category: Island
• Geographical Feature: Island
• Canadian Province/Territory: Ontario
• Elevation: 123 meters
• Location: Frontenac
• Atlas of Canada Locator Map: Middle Brother Island
• GPS Coordinate Locator Map: Middle Brother Island Lat/Long