Mississippi State Port of Gulfport
- An Enterprise Agency of the State of Mississippi and is governed by the Mississippi Department of Economic and Community Development and the Mississippi State Port Authority Board of Port Commissioners. It serves as one of the import and export gateways
- http://www.shipmspa.com

Tennessee Tombigbee Waterway Development Authority
- Navigable rivers and canals connecting the Tennessee River and inland Mississippi and Alabama with the Gulf of Mexico. Information and photos cover history, port facilities, and commercial, recreational, and industrial uses.
- http://www.tenntom.org/