Bay
- Galveston Bay
An arm of the Gulf of Mexico in Texas to the south of Houston.
- Mobile Bay
A bay of the Gulf of Mexico; fed by the Mobile River.
- Tampa Bay
An arm of the Gulf of Mexico in west central Florida.
Also contains
- Gulf Coast
A seashore of the Gulf of Mexico.
- Gulf of Campeche
A part of the Gulf of Mexico to the west of Yucatan.