The 1st Australian Logistic Support Group (1 ALSG) was a ground support unit of the Australian Army during the Vietnam War located at Vũng Tàu. 1 ALSG commanded logistic support units to all Australian forces in South Vietnam and was composed of engineer, transport, ordnance, medical and service corps units. The unit was initially formed in 1965 as the Australian Logistic Support Company to support the 1st Battalion, Royal Australian Regiment, and was redesignated as 1 ALSG in April 1966 following the deployment of the 1st Australian Task Force as the Australian commitment in Vietnam expanded.