Corruption in Australia has been a recurring source of political controversy and public debate. International rankings have assessed Australia as having comparatively low political corruption, in line with other Western democracies.

Historically allegations of corruption were investigated through royal commissions and other commissions of inquiry. Several high-profile cases in the late 20th century – including the Fitzgerald Inquiry in Queensland, the WA Inc scandal in Western Australia and the Wood Royal Commission in New South Wales – led to a greater focus on anti-corruption efforts at a state level. The Independent Commission Against Corruption was established in New South Wales in 1989 and all Australian states had established similar broad-based anti-corruption agencies by 2013.

At a federal level, Australia became a signatory to the United Nations Convention against Corruption in 2005. Following substantial public date, a National Anti-Corruption Commission (NACC) began operations in 2023, modelled on the state bodies. The NACC inherited some of the functions of the Australian Commission for Law Enforcement Integrity, while the Australian Criminal Intelligence Commission has also monitored corruption.

The National Anti-Corruption Commission, often shortened to the NACC, is an independent federal Australian agency that was created under the National Anti-Corruption Commission Act 2022.

The commission is designed to combat corrupt conduct from public officials employed in the Australian Public Service (APS), including politicians and civil servants.

It is independent of government and has the power to initiate its own investigations. It can also receive tip-offs from whistleblowers and the public.

The NACC replaced the Australian Commission for Law Enforcement Integrity and began operations on 1 July 2023.

Protections for whistleblowers have been assessed as "weak". The Human Rights Law Centre has called for the creation of a Whistleblower Protection Authority.