An embayment is a recess in a coastline. It allows the formation of a bay. Embayment is a geological term.

The formation of the Mississippi River Delta can be traced back to the late Cretaceous Period, approximately 100 million years ago, with the creation of the Mississippi embayment. The embayment began focusing sediment into the Gulf of Mexico, which facilitated the deltaic land-building processes for the future.

E. M. Cushing has written:

'General geology of the Mississippi embayment' -- subject(s): Geology

The Sierra Madre de Chiapas is one of the borders of the Gulf Coastal Plain. Others include the Sierra Madre Oriental, the Mississippi embayment, the Ouachita Highlands and the Appalachian Mountains.

The Aegean Sea an elongated embayment of the Mediterranean Sea located off the northern Greek peninsula.