Three Mountain Harbour is a Bay located in Newfoundland and Labrador and has an elevation of 25 meters.

• Latitude: 51° 18' 29'' North   (decimal: 51.3080555)
• Longitude: 55° 36' 25'' West   (decimal: -55.6069444)
• Topography Feature Category: Bay
• Geographical Feature: Harbour
• Canadian Province/Territory: Newfoundland and Labrador
• Elevation: 25 meters
• Atlas of Canada Locator Map: Three Mountain Harbour
• GPS Coordinate Locator Map: Three Mountain Harbour Lat/Long