Brigadier Oliver David Jackson DSO, OBE (24 November 1919 – 7 May 2004) was a senior officer in the Australian Army, seeing service during the Second World War and the Vietnam War. After graduating from the Royal Military College, Duntroon, in 1939 he served in the Middle East and New Guinea during the Second World War. Later, he commanded the Australian Army Training Team Vietnam (AATTV) and the Australian Army Force Vietnam (AAFV) in 1965–1966. In 1966, he became the first commander of 1st Australian Task Force (1 ATF) in South Vietnam. He subsequently filled a number of senior command and staff positions before retiring in 1974. He died in 2004.