Clontarf is a Unincorporated area located in Renfrew, Ontario and has an elevation of 244 meters.

• Latitude: 45° 24' 42'' North   (decimal: 45.4116666)
• Longitude: 77° 8' 9'' West   (decimal: -77.1358333)
• Topography Feature Category: Unincorporated area
• Geographical Feature: Dispersed Rural Community
• Canadian Province/Territory: Ontario
• Elevation: 244 meters
• Location: Renfrew
• Atlas of Canada Locator Map: Clontarf
• GPS Coordinate Locator Map: Clontarf Lat/Long