Jack Rock is a Shoal located in Thunder Bay, Ontario.

• Latitude: 48° 45' 39'' North   (decimal: 48.7608333)
• Longitude: 87° 54' 24'' West   (decimal: -87.9066666)
• Topography Feature Category: Shoal
• Geographical Feature: Rock
• Canadian Province/Territory: Ontario
• Location: Thunder Bay
• Atlas of Canada Locator Map: Jack Rock
• GPS Coordinate Locator Map: Jack Rock Lat/Long