Mountain Islands is a Island located in Thunder Bay, Ontario and has an elevation of 276 meters.

• Latitude: 49° 58' 59'' North   (decimal: 49.9830555)
• Longitude: 88° 42' 27'' West   (decimal: -88.7074999)
• Topography Feature Category: Island
• Geographical Feature: Islands
• Canadian Province/Territory: Ontario
• Elevation: 276 meters
• Location: Thunder Bay
• Atlas of Canada Locator Map: Mountain Islands
• GPS Coordinate Locator Map: Mountain Islands Lat/Long