Thornby is a Unincorporated area located in Thorne; Pontiac, Quebec and has an elevation of 234 meters.

• Latitude: 45° 47' 7'' North   (decimal: 45.7852778)
• Longitude: 76° 29' 17'' West   (decimal: -76.4880555)
• Topography Feature Category: Unincorporated area
• Geographical Feature: Hameau
• Canadian Province/Territory: Quebec
• Elevation: 234 meters
• Location: Thorne; Pontiac
• Atlas of Canada Locator Map: Thornby
• GPS Coordinate Locator Map: Thornby Lat/Long