11 March – A Senate report on poverty is immediately dismissed by Prime Minister John Howard. The report shows between 2 and 3.5 million Australians, or up to 19 per cent of the population, are living in poverty.
5 April – Australia's biggest supplier of the potential explosiveammonium nitrate decides to pull the product from its stores in response to concerns it could be used by terrorists.
14 April – The Family Court allows a thirteen-year-old child, born female, to start preliminary hormone treatment: the child identifies as being male and has been suffering from gender identity disorder.
24 April – John Howard joins Australian troops in Baghdad for ceremonies honouring the country's war dead.
3 June – United States PresidentGeorge W. Bush publicly supports Prime Minister John Howard and criticises Opposition Leader Mark Latham, sparking criticism from the Opposition for intervening in Australian domestic politics.
12 October – Simon Crean resigns from the position of Shadow Treasurer, requesting a lesser portfolio, and John Faulkner resigns as Leader of the Opposition in the Senate in the aftermath of the Australian Labor Party's election loss.
12 October – Numerous Australians visit Kuta, Bali, to commemorate the second anniversary of the Bali bombing, with services being held across the nation.
14 October – Annette Ellis stands down as Shadow Minister for Ageing, Seniors and Disabilities.
14 October – The successful tenderer for Melbourne's Mitcham-Frankston Freeway is announced, with tolls due to be set at $4.43 for a one way trip.
26 November – a riot occurred on Palm Island leading to a complete break down of law and order with the 18 members of the Queensland Police barricading themselves in the local hospital.
11 December – The Network Ten is the next Australian television network to introduce a watermark on its programs, although the watermark was broadcast on Ten News. It was located on the bottom left of the screens by TEN-10 Sydney before switching to bottom right in 2006.
12 September – Daniel Green wins the men's national marathon title, clocking 2:23:06 in Sydney, while Jenny Wickman claims the women's title in 2:55:09.
25 September – The Port Adelaide Power (17.11.113) defeat the Brisbane Lions (13 October 1973) to win the 108th VFL/AFL premiership. It is the first AFL premiership for Port Adelaide & the first grand final loss for Brisbane.
3 October – The Canterbury Bulldogs defeat the Sydney Roosters 16-13 to win the 97th NSWRL/ARL/NRL premiership. It marks a successful end to a controversial season for the Bulldogs, in which they were accused of sexual assault while in Coffs Harbour. The behaviour from some of their fans at times also put the club in hot water.