The treasurer of Australia, also known as the Federal treasurer or simply the treasurer, is the minister of state of the Commonwealth of Australia charged with overseeing government revenue collection, federal expenditure and economic policy as the head of the Department of the Treasury. The current treasurer is Jim Chalmers, who was selected by Prime Minister Anthony Albanese in May 2022 following the 2022 Australian federal election.

The Department of the Treasury, also known as The Treasury, is the national treasury and financial department of the federal government of the Commonwealth of Australia. The treasury is responsible for executing economic and fiscal policy, market regulation and the delivery of the federal budget with the department overseeing 16 agencies. The Treasury is one of only two departments that have existed continuously since Federation in 1901, the other being the Department of the Attorney-General.