Galliano is a census-designated place on the Bayou Lafourche in Lafourche Parish, Louisiana, in the United States. As of the 2000 census, the CDP population was 7,356. It is part of the Houma–Bayou Cane–Thibodaux Metropolitan Statistical Area.
Galliano is located at 29°26′55″N 90°18′26″W / 29.44861°N 90.30722°W / 29.44861; -90.30722 (29.448539, -90.307274).
According to the United States Census Bureau, the CDP has a total area of 11.0 square miles (28.5 km²), all of it land.