The 8th Field Ambulance was a medical unit of the Australian Army. It was originally formed for service during World War I as part of the Australian Imperial Force, and served mainly on the Western Front between 1916 and 1918, before disbanding in early 1919. During World War II, the unit was re-raised as a Militia unit and served in Western Australia, New Guinea and Bougainville. During the Vietnam War, the unit served in Vung Tau in support of the 1st Australian Task Force between 1967 and 1968, before being disbanded in 1972. The unit's designation is now perpetuated by one for the 1st Close Health Battalion's close health companies.