St. Marys River is a Unincorporated area located in Guysborough, Nova Scotia and has an elevation of 7 meters.

• Latitude: 45° 4' 49'' North   (decimal: 45.0802777)
• Longitude: 61° 55' 49'' West   (decimal: -61.9302777)
• Topography Feature Category: Unincorporated area
• Geographical Feature: Community
• Canadian Province/Territory: Nova Scotia
• Elevation: 7 meters
• Location: Guysborough
• Atlas of Canada Locator Map: St. Marys River
• GPS Coordinate Locator Map: St. Marys River Lat/Long