Harmony Island is a Island located in Northumberland, Ontario and has an elevation of 204 meters.

• Latitude: 44° 6' 12'' North   (decimal: 44.1033333)
• Longitude: 78° 19' 34'' West   (decimal: -78.3261111)
• Topography Feature Category: Island
• Geographical Feature: Island
• Canadian Province/Territory: Ontario
• Elevation: 204 meters
• Location: Northumberland
• Atlas of Canada Locator Map: Harmony Island
• GPS Coordinate Locator Map: Harmony Island Lat/Long