Flat Top Mountain is a Mountain located in Cassiar Land District, British Columbia.

• Latitude: 57° 56' 10'' North   (decimal: 57.9361111)
• Longitude: 126° 22' 40'' West   (decimal: -126.377778)
• Topography Feature Category: Mountain
• Geographical Feature: Mountain
• Canadian Province/Territory: British Columbia
• Location: Cassiar Land District
• Atlas of Canada Locator Map: Flat Top Mountain
• GPS Coordinate Locator Map: Flat Top Mountain Lat/Long