Billy Boys Marsh is a Low vegetation located in St. Mary's-The Capes, Newfoundland and Labrador.

• Latitude: 47° 16' 18'' North   (decimal: 47.2716666)
• Longitude: 53° 30' 55'' West   (decimal: -53.5152777)
• Topography Feature Category: Low vegetation
• Geographical Feature: Marsh
• Canadian Province/Territory: Newfoundland and Labrador
• Location: St. Mary's-The Capes
• Atlas of Canada Locator Map: Billy Boys Marsh
• GPS Coordinate Locator Map: Billy Boys Marsh Lat/Long