The Australian Diver Accreditation Scheme (ADAS) is the Australian national occupational diver certification scheme. It was developed by the Australian Government as a not-for-profit diver training and accreditation scheme operating at the level of world’s best practice. It is administered on a cost-recovery basis by the ADAS Board under a Memorandum of Understanding with the Commonwealth Department of Resources, Energy and Tourism. Because of this link all ADAS certification cards have the authority to bear the Australian Coat of Arms.

The ADAS diver certification is embedded in the legislation of most states and has world wide credibility and recognition.