The St. Marys River (sometimes spelled as the St. Mary's River) is a river, approximately 90 mi (144 km) long, in the southeasern United States. For its entire length, it forms the eastern portion of the boundary between the U.S. states of Georgia and Florida.

It rises in the southeastern Okefenokee Swamp, and flows S, then E, then N, then SSE and flows into the Atlantic Ocean near St. Marys, Georgia and Fernandina Beach, Florida.

See also

• List of Florida rivers
• List of Georgia rivers

External link

• State of Florida: Guide to the St. Marys River