The CAC Wackett Trainer was the first aircraft type designed in-house by the Commonwealth Aircraft Corporation of Australia. The name was derived from its designer Lawrence Wackett. "In acknowledgement of the CAC Manager's enormous contribution, the RAAF were to call the aircraft the Wackett Trainer"

The Commonwealth Aircraft Corporation (CAC) was an Australian aircraft manufacturer. The CAC was established in 1936, to provide Australia with the capability to produce military aircraft and engines.