Isthmus Bay is a Bay located in Newfoundland and Labrador and has an elevation of 4 meters.

• Latitude: 48° 33' 10'' North   (decimal: 48.5527777)
• Longitude: 58° 43' 27'' West   (decimal: -58.7241666)
• Topography Feature Category: Bay
• Geographical Feature: Bay
• Canadian Province/Territory: Newfoundland and Labrador
• Elevation: 4 meters
• Atlas of Canada Locator Map: Isthmus Bay
• GPS Coordinate Locator Map: Isthmus Bay Lat/Long