Flat Island is a Island located in Parry Sound, Ontario and has an elevation of 177 meters.

• Latitude: 45° 55' 53'' North   (decimal: 45.9313888)
• Longitude: 80° 53' 25'' West   (decimal: -80.8902777)
• Topography Feature Category: Island
• Geographical Feature: Island
• Canadian Province/Territory: Ontario
• Elevation: 177 meters
• Location: Parry Sound
• Atlas of Canada Locator Map: Flat Island
• GPS Coordinate Locator Map: Flat Island Lat/Long