Admiral is the highest active rank of the Royal Australian Navy and was created as a direct equivalent of the British naval rank of admiral. It is a four-star rank. Since 1968, generally the only time the rank is held is when the Chief of the Defence Force is a navy officer.

The Royal Australian Navy (RAN) is the naval force of the Australian Defence Force (ADF). The professional head of the RAN is Chief of Navy (CN) Vice Admiral Mark Hammond AM, RAN. CN is also jointly responsible to the Minister of Defence (MINDEF) and the Chief of Defence Force (CDF). The Department of Defence as part of the Australian Public Service administers the ADF.