The Reserve Bank of Australia (RBA) is Australia's central bank and banknote issuing authority. It has had this role since 14 January 1960, when the Reserve Bank Act 1959 removed the central banking functions from the Commonwealth Bank.

A central bank, reserve bank, national bank, or monetary authority is an institution that manages the currency and monetary policy of a country or monetary union. In contrast to a commercial bank, a central bank possesses a monopoly on increasing the monetary base. Many central banks also have supervisory or regulatory powers to ensure the stability of commercial banks in their jurisdiction, to prevent bank runs, and in some cases also to enforce policies on financial consumer protection and against bank fraud, money laundering, or terrorism financing.