Duff Island is a Island located in Range 2 Coast Land District, British Columbia and has an elevation of 1179 meters.

• Latitude: 51° 23' 1'' North   (decimal: 51.3836111)
• Longitude: 124° 7' 17'' West   (decimal: -124.1213888)
• Topography Feature Category: Island
• Geographical Feature: Island
• Canadian Province/Territory: British Columbia
• Elevation: 1179 meters
• Location: Range 2 Coast Land District
• Atlas of Canada Locator Map: Duff Island
• GPS Coordinate Locator Map: Duff Island Lat/Long