Diadem Mountain is a Mountain located in New Westminster Land District, British Columbia and has an elevation of 1289 meters.

• Latitude: 49° 59' 49'' North   (decimal: 49.9969444)
• Longitude: 124° 4' 27'' West   (decimal: -124.0741666)
• Topography Feature Category: Mountain
• Geographical Feature: Mountain
• Canadian Province/Territory: British Columbia
• Elevation: 1289 meters
• Location: New Westminster Land District
• Atlas of Canada Locator Map: Diadem Mountain
• GPS Coordinate Locator Map: Diadem Mountain Lat/Long