The Landing Craft, Support (Large) were two distinct classes of amphibious warfare vessels used by the United States Navy (USN) in the Pacific and the Royal Navy in World War II. The USN versions, which were later reclassified Landing Ship Support, Large, also performed radar picket duty and fire fighting.

An amphibious warfare ship is an amphibious vehicle warship employed to land and support ground forces, such as marines, on enemy territory during an amphibious assault.