Breton Sound

Breton Sound (Détroit Breton) is a sound of the Gulf of Mexico and a part of the coastline of the U.S. state of Louisiana. It lies off the southeast coast of the state and is partially enclosed by the Breton Islands.

Two ships in the United States Navy have been named the USS Breton after this area.

On August 29, 2005, Hurricane Katrina crossed the sound before making its third landfall near Pearlington, Mississippi.

In 2023, Louisiana's Coastal Master Plan intends to redirect fresh water from the Mississippi River east into wetlands in Breton Sound.