Saint Mary's River
- Mary River (disambiguation)
- Marys River (disambiguation)
- Saint Maries River
- Saint Marys River (Virginia)
- St. Mary River (Alberta–Montana)
- St. Mary River (British Columbia)
- St. Mary's (disambiguation)
- St. Mary's River (Nova Scotia)
- St. Marys River (Florida–Georgia)
- St. Marys River (Indiana and Ohio)
- St. Marys River (Maryland)
- St. Marys River (Michigan–Ontario)