Grand Dune Island is a Island located in Northumberland, New Brunswick and has an elevation of 1 meters.

• Latitude: 47° 8' 25'' North   (decimal: 47.1403758)
• Longitude: 65° 13' 24'' West   (decimal: -65.2233350)
• Topography Feature Category: Island
• Geographical Feature: Island
• Canadian Province/Territory: New Brunswick
• Elevation: 1 meters
• Location: Northumberland
• Atlas of Canada Locator Map: Grand Dune Island
• GPS Coordinate Locator Map: Grand Dune Island Lat/Long