Porcupine Island is a Island located in Frontenac, Ontario and has an elevation of 143 meters.

• Latitude: 44° 32' 40'' North   (decimal: 44.5444444)
• Longitude: 76° 25' 57'' West   (decimal: -76.4324999)
• Topography Feature Category: Island
• Geographical Feature: Island
• Canadian Province/Territory: Ontario
• Elevation: 143 meters
• Location: Frontenac
• Atlas of Canada Locator Map: Porcupine Island
• GPS Coordinate Locator Map: Porcupine Island Lat/Long