Mount Duff is a Mountain located in Cassiar Land District, British Columbia and has an elevation of 1858 meters.

• Latitude: 59° 50' 41'' North   (decimal: 59.8447222)
• Longitude: 138° 40' 46'' West   (decimal: -138.6794444)
• Topography Feature Category: Mountain
• Geographical Feature: Mount
• Canadian Province/Territory: British Columbia
• Elevation: 1858 meters
• Location: Cassiar Land District
• Atlas of Canada Locator Map: Mount Duff
• GPS Coordinate Locator Map: Mount Duff Lat/Long