Certain subject-matter in Australia is subject to various forms of government censorship. These include matters of national security, judicial non-publication or suppression orders, defamation law, the federal Racial Discrimination Act 1975 (Cth), film and literature (including video game) classification, and advertising restrictions.

Some forms of censorship are not administered directly by the government or courts. For example, some foreign websites have on occasion been blocked by Australian internet service providers. More recently, concerns have been raised as to the level of academic freedom enjoyed at Australia's public universities. Outside of these matters, standards for television, radio, recorded music, the press and most commercial advertising are enforced, in the first instance, by means of industry self-regulation.

Legal protections Australia does not have explicit freedom of speech in any constitutional or statutory declaration of rights, with the exception of political speech which is protected from criminal prosecution at common law per Australian Capital Television Pty Ltd v Commonwealth. There is however an "implied freedom of political communication" that was recognised in Lange v Australian Broadcasting Corporation..

In 1992 the High Court of Australia judged in the case of Australian Capital Television Pty Ltd v Commonwealth that the Australian Constitution, by providing for a system of representative and responsible government, implied the protection of political communication as an essential element of that system.. This freedom of political communication is not a broad freedom of speech as in other countries, but rather a freedom that only protects political free speech. This freedom of political free speech is a shield against government prosecution, not a shield against private prosecution (civil law). It is also less a causal mechanism in itself, rather than simply a boundary which can be adjudged to be breached. Despite the court's ruling, however, not all political speech appears to be protected in Australia and several laws criminalise forms of speech that would be protected in republic countries such as the United States.

In 1996, Albert Langer was imprisoned for advocating that voters fill out their ballot papers in a way that was invalid.. Amnesty International declared Langer to be a prisoner of conscience. The section which outlawed Langer from encouraging people to vote this way has since been repealed and the law now says only that it is an offence to print or publish material which may deceive or mislead a voter.

The Howard government expanded sedition law as part of the war on terror. Media Watch ran a series on the amendments on ABC television.

In 2003, CSIRO senior scientist Graeme Pearman was reprimanded and encouraged to resign after he spoke out on global warming. The Howard government was accused of limiting the speech of Pearman and other scientists.

In 2010, journalist Andrew Bolt was sued in the Federal Court over two posts on his Herald Sun blog in 2009. Bolt was found to have contravened the Racial Discrimination Act 1975 (RDA) in 2011 following comments regarded to be representative of a "eugenic" approach to aboriginal identity.. This prompted the federal government to propose changes to the Racial Discrimination Act but this has been met with stiff resistance.

In 2014 the Supreme Court of Victoria issued a blanket media gag order on the reporting of a high-profile international corruption case. The gag order prevented the publishing of articles regarding bribes presented to high-ranking officials of Malaysia, Indonesia and Vietnam by senior executives of the Reserve Bank of Australia in order to secure the adoption of the Australian invented and produced polymer banknote technology..

Australian Classification Board

Certain films, books and video games have, in effect, been banned from sale in Australia because they have been "refused classification" by the Australian Classification Board which was founded in 1970. Materials are generally refused classification because of explicit violent or sexual content.

Although the Australian Classification Board Guidelines state that "adults should be able to read, hear and see what they want", many books are apparently banned or given a restricted classification simply because they may offend certain segments of the population. Under particularly frequent attacks are books containing erotica, those concerning illegal drugs, and those discussing end-of-life issues (particularly those discussing or condoning assisted suicide). For example, in December 2006 the voluntary euthanasia book The Peaceful Pill Handbook was classified by the OFLC as X18+ and approved for publication. A month later, on appeal from the Australian Attorney General Philip Ruddock and Right to Life NSW, the book's classification was reviewed by the Literature Classification Board and rated RC (refused classification).

In 2000, Liberal Party of Australia Prime Minister John Howard had the Australian Classification Board prohibit depictions of certain sexual fetishes including candle wax, bondage, spanking, fisting, and golden showers. Sexually explicit depictions of adults who appeared to look under 18 years of age were also prohibited by the Board. The Australian Sex Party accused these actions of censoring depictions of female ejaculation and censoring adult women with small breasts.

Banned publications Imports

In Australia, the importation of certain books, video games, and media are prohibited based on its non-fictional or fictional contents. It was reported on in 2021, that the Australian Border Force stated that any depictions of sex, drug misuse or addiction, crime, cruelty, violence, terrorist acts, or revolting content that offends moral standards and decency, are prohibited.

Book censorship until 1970 Book censorship has existed in Australia since the 19th century. Chronology of censorship in Australia & New Zealand, caslon.com.au (archive.org copy). Retrieved 7 June 2021.Hon.Hon. William George Hayden, Censorship: The Future , aph.gov.au. Retrieved 7 June 2021. Each state had its own legislation, including: Obscene and Indecent Publications Act 1901 (New South Wales) (later Indecent Articles and Publications Act 1975) Police Offences Act 1958 (Victoria) Indecent Publications and Articles Act 1902-1983 (Western Australia)

Norman Lindsay's Redheap was the first book to be banned from import into Australia, in May 1930, under the Commonwealth Customs Act 1901. This was before the establishment of the Commonwealth Book Censorship Board in 1933 by Prime Minister Joseph Lyons' United Australia Party, which was renamed the Literature Censorship Board in 1937. The novel Upsurge, written by J. M. Harcourt and published in 1934, became the first Australian book to be officially banned under the guidelines of the Commonwealth Book Censorship Board It was initially banned as seditious, later reviewed and the ban confirmed, ostensibly on grounds of indecency and explicit depictions of sex under the Indecent Publications Act. However the main cause of its ban was its socialist tone and subversive agenda which criticised capitalism, featuring communist characters in its portrayal of life in the relief camps of the Depression.

In the 1960s, censorship laws came under pressure when "three intrepid Sydney activists,"Patrick Mullins, Trials of Portnoy: when Penguin fought for literature and liberty , The Conversation Retrieved 7 June 2021. Alexander William Sheppard, Leon Fink and Ken Buckley, locally published D. H. Lawrence's The Trial of Lady Chatterley (Sydney, 1965),The trial of Lady Chatterley : Regins v. Penguin Books Limited, worldcat.org. Retrieved 6 June 2021. which was at that time banned in Australia,"Publisher to 'fight'", The Sydney Morning Herald, 28 April 1965, p. 12. and Sheppard then published James Baldwin's Another Country (1966)."Ban on U.S. book may be lifted", The Sydney Morning Herald, 15 May 1966, p. 28. In 1970, Penguin Books had three copies of Portnoy's Complaint smuggled into Australia and then secretly printed 75,000 copies of the book. In the early 1970s Don Chipp, the federal Minister of Customs and Excise, largely ended censorship of printed material in the country, with Australians being able to read such books as Portnoy’s Complaint and Henry Miller's Tropic of Cancer.CHIPP, Donald Leslie (1925–2006) , senate.gov.au. Retrieved 7 June 2021.

List of banned books

Press freedom Freedom House reported in 2021 that although Australia's "constitution does not explicitly protect press freedom, journalists scrutinise lawmakers and the government, covering controversial topics generally without serious obstacles or risk of harassment or violence." However, it expressed concern about two police raids conducted in 2019, and the widespread use of judicial suppression orders. Press freedom may also be affected by the provisions of defamation law and the Commonwealth RDA, which are discussed in the following sections.

Australia has been on a decline on the Press Freedom Index curated by the Reporters Without Borders, in reflection of rising media censorship and intimidation of journalists in the country, including media companies maintaining close ties to political leaders, fueling doubts about editorial independence. Two giant firms dominate mass media in Australia – Nine Entertainment and News Corp Australia, a subsidiary of American-based News Corp. The country was ranked 19th out of 180 countries in 2018, before subsequently dropping to 26th out of 180 countries for 2020 and 39th in 2022.

National security The Australian Government has occasionally acted against media outlets for reasons of national security. In June 2019, federal police raided the Sydney offices of the Australian Broadcasting Corporation and the home of Sunday Telegraph political editor Annika Smethurst, seeking evidence against officials who may have leaked sensitive government information to journalists. Both raids were widely condemned in media and legal circles, and led to a review.

Suppression and non-publication orders Commonwealth, State and territory law provides for the suppression or non-publication of certain information regarding legal proceedings. This can be to avoid contaminating the jury pool, or to protect the identities of children and sexual assault victims. While these orders are generally targeted at journalists, in the past the transmission of television crime dramas has been delayed as a result.

The case of Cardinal George Pell is one cited by Freedom House. The conviction of one of the Vatican's most senior officials made headlines around the world, yet a suppression order banned all Australian media outlets from reporting the story. The order was intended to avoid the verdict influencing a future trial involving separate charges (these were later dropped). Australians could, however, readily find the news on foreign websites. Melbourne's Herald Sun newspaper posted on its front page "CENSORED" in large print in protest of the ban, noting that international sources were reporting on a "very important story that is relevant to Victorians". Victorian authorities later charged 36 individual journalists and news organisations with breaching suppression orders related to the verdict.

Defamation

Australian law of defamation developed primarily out of the English law of defamation and its cases, though now there are differences introduced by statute and by the implied constitutional limitation on governmental powers to limit speech of a political nature established in Lange v Australian Broadcasting Corporation (1997)..