The Australian Society of Hypnosis WA (ASH WA) is a not-for-profit organization dedicated to the training of registered healthcare professionals in the practice of hypnosis. Originally there were two professional hypnosis societies in Western Australia, one of which was the West Australian branch of the Australian Society of Hypnosis Limited. The other society was the West Australian Society of Medical Hypnosis ( WASMH ) which coincidentally was the first professional hypnosis society in Australia In 1989 these two professional bodies decided to merge and the new organisation became the Australian Society of Hypnosis WA.

The Australian Society of Hypnosis WA was welcomed as a Constituent Society of the International Society of Hypnosis in January 2024. It is the only Hypnosis Society in WA to receive this recognition.