John Hewlett Rock is a Shoal located in Newfoundland and Labrador.

• Latitude: 49° 38' 13'' North   (decimal: 49.6370280)
• Longitude: 55° 38' 13'' West   (decimal: -55.6369741)
• Topography Feature Category: Shoal
• Geographical Feature: Rock
• Canadian Province/Territory: Newfoundland and Labrador
• Atlas of Canada Locator Map: John Hewlett Rock
• GPS Coordinate Locator Map: John Hewlett Rock Lat/Long