Porcupine Island is a Island located in Frontenac, Ontario and has an elevation of 121 meters.

• Latitude: 44° 27' 41'' North   (decimal: 44.4613888)
• Longitude: 76° 23' 25'' West   (decimal: -76.3902777)
• Topography Feature Category: Island
• Geographical Feature: Island
• Canadian Province/Territory: Ontario
• Elevation: 121 meters
• Location: Frontenac
• Atlas of Canada Locator Map: Porcupine Island
• GPS Coordinate Locator Map: Porcupine Island Lat/Long