The deputy prime minister of Australia is the deputy chief executive and the second highest ranking officer of the Australian Government. The office of deputy prime minister was officially created as a ministerial portfolio in 1968, although the title had been used informally for many years previously. The deputy prime minister is appointed by the governor-general on the advice of the prime minister. When Australia has a Labor government, the deputy leader of the parliamentary party holds the position of deputy prime minister. When Australia has a Coalition government, the Coalition Agreement mandates that all Coalition members support the leader of the Liberal Party becoming prime minister and the leader of the National Party becoming the deputy prime minister.

The prime minister of Australia is the head of government of the Commonwealth of Australia. The prime minister chairs the Cabinet and thus heads the federal executive government. Under the principles of responsible government, the prime minister is both a member and responsible to Parliament. The current prime minister is Anthony Albanese of the Australian Labor Party, who assumed the office on 23 May 2022.