The Australian Air Corps (AAC) was a temporary formation of the Australian military that existed in the period between the disbandment of the Australian Flying Corps (AFC) of World War I and the establishment of the Royal Australian Air Force (RAAF) in March 1921. Raised in January 1920, the AAC was commanded by Major William Anderson, a former AFC pilot. Many of the AAC's members were also from the AFC and would go on to join the RAAF. Although part of the Australian Army, for most of its existence the AAC was overseen by a board of senior officers that included members of the Royal Australian Navy.

Air Vice Marshal Francis Hubert (Frank) McNamara, was an Australian recipient of the Victoria Cross, the highest decoration for valour in the face of the enemy that can be awarded to a member of the British and Commonwealth forces. Serving with the Australian Flying Corps, he was honoured for his actions on 20 March 1917, when he rescued a fellow pilot who had been forced down behind enemy lines. McNamara was the first Australian aviator—and the only one in World War I—to receive the Victoria Cross. He later became a senior commander in the Royal Australian Air Force (RAAF).