Butternut Island is a Island located in Renfrew, Ontario and has an elevation of 89 meters.

• Latitude: 45° 45' 38'' North   (decimal: 45.7605555)
• Longitude: 76° 47' 12'' West   (decimal: -76.7866666)
• Topography Feature Category: Island
• Geographical Feature: Island
• Canadian Province/Territory: Ontario
• Elevation: 89 meters
• Location: Renfrew
• Atlas of Canada Locator Map: Butternut Island
• GPS Coordinate Locator Map: Butternut Island Lat/Long