26 January 1808 – George Johnston played a key role in the only successful armed takeover of government in Australia's recorded history, the Rum Rebellion. Johnston later sailed for England and was found guilty of mutiny.
10 June 1838 – Myall Creek Massacre – up to 30 aboriginals were slaughtered at the Myall Creek near Bingara in northern New South Wales. After two trials, seven of the 11 colonists involved in the killings were found guilty of murder and hanged
June–August 1840 – Maria shipwreck massacre – 25 survivors of the Maria shipwreck are massacred along the Coorong under mysterious circumstances while being assisted back to Adelaide by members of the Ngarrindjeri. GovernorGeorge Gawler orders a hasty investigation and the execution of those responsible. A drumhead court-martial leads to the execution of two Ngarrindjeri men.
26 June 1880 – Joe Byrne shot dead Aaron Sherritt for giving the police information about the Kelly Gang in exchange for money.
27 June 1880 – Ned Kelly's Last Stand – The Kelly Gang held the town of Glenrowan, Victoria hostage at the town's inn in an attempt to ambush police. The attempt failed and a siege ensued on the 28th, during which three members of Kelly's gang and a young boy were killed, and Ned Kelly was captured after being wounded 28 times by police.
16 May 1881 – Police Trooper Harry Pearce was viciously attacked by a prisoner, Robert Johnson, with a knife while on escort to Kingston SE. Pearce died of his injuries on 19 May, the second South Australian policeman to die while on duty. Johnson was executed at Mount Gambier Gaol on 18 November the same year.
24 December 1891 – The Windsor murder – English gasfitter, confidence trickster and career criminal Frederick Bailey Deeming murdered his new wife Emily (née Mather) at a newly rented house in Andrew Street, Windsor, Melbourne, burying her body under the hearth. He had previously murdered his first wife Marie Deeming and their four children and buried them beneath the floor of a house at Rainhill, England in July or August 1891. Their bodies were not discovered until after the Windsor murder. Deeming was arrested at Southern Cross, Western Australia, and after a trial at Melbourne, he was executed in June 1892. His notoriety in Australia was such that he was widely believed to be Jack the Ripper.
20 July 1900 – Jimmy Governor murders four members of the Mawbey family, and schoolteacher Helen Josephine Kerz, at Breelong, NSW. Then with his brother Joe, he murdered two old men, Alexander McKay and Kyrien Fitzpatrick, and three members of the O'Brien family, mother and wife Elizabeth, her 10-month-old son at Poggy, and unborn child, near Merriwa in the Upper Hunter district. After being on the run for around 100 days, Joe was shot dead and Jimmy was taken to Sydney for trial, where he is found guilty of the murder of Miss Kerz (not of any of his other victims) and hanged at Darlinghurst Gaol in January 1901.
2 January 1902 – Bertha Schippan is found murdered at Towitta, South Australia, two weeks before her 14th birthday. After an inquest, her 24-year-old sister Mary stands trial in Adelaide, but is acquitted.
April 1902 – When the charred remains of Dahlke and Constable George Doyle of the Upper Warrego police station, who had set out during Easter 1902 to arrest James and Patrick Kenniff for horse-stealing, were found in Lethbridge's Pocket, strong suspicion fell on the Kenniffs. Although he did not see the actual murders, Doyle's Aboriginal tracker, Sam Johnson, heard shooting and when he neared the arrest scene, the Kenniffs pursued him, but he escaped. Despite a reward of £1000 and a large police manhunt, they are not taken until 23 June at Arrest Creek, south of Mitchell.
6 October 1909 – Martha Rendell is hanged in Western Australia for the murder of three of her stepchildren.
8 June 1913 – 11-year-old Ivy Mitchell was raped and murdered on her way home from school near Samford, Queensland by Ernest Austin; he was the last person in Queensland to be hanged.
1 January 1915 – Two men flying a Turkish flag attacked a picnic train near Broken Hill, in what is known as The Battle of Broken Hill. Both attackers were shot dead by police; four other people were killed and seven wounded.
14 February 1916 — Liverpool riot — An initial mutiny/strike by 5000 AIF soldiers from Casula near Liverpool became a three-day riot and pub crawl ending at Central and East Sydney, involving commandeered trains, destruction of property, and confrontations with police and military guards. NSW PremierWilliam Holman called a state of emergency and closed Sydney's pubs. About 1000 soldiers were court-martialled and gaoled or discharged from the army. One consequence was the introduction of six o'clock closing, already present in South Australia, following a June 1916 referendum. The NSW "six o'clock swill" saw the rise of sly-grog shops, and lasted until 1955 when the closing time was changed to 10 pm following another referendum.
December 1917 – early 1918 – Wonnangatta murders – in the remote Wonnangatta Valley in East Gippsland, Victoria; the badly decomposed body of Jim Barclay, the manager of Wonnangatta Station, was found near the station homestead on 23 February 1918. He had been shot from behind with a shotgun, and John Bamford, a cook and general hand was assumed to be the culprit. However, Bamford's body was found late in 1918 on the Howitt Plains after a state wide search when the winter snows had melted. He had also been shot from close range. No arrests were ever made, despite the State Government offering a £200 reward.
21 December 1921 – The Gun Alley Murder – 12-year-old Alma Tirtschke was found raped and murdered in Gun Alley, Melbourne. 28-year-old Colin Ross was hanged for the crime, but in 1992 re-assessment stated Ross was probably innocent. After DNA testing cleared Ross he was pardoned posthumously on 27 May 2008.
May 1926 – Forrest River massacre – Western Australia – 11 people were murdered in a series of punitive raids after the murder of a pastoralist in the Kimberley region of Western Australia.
17 December 1926 – Adelaide: fired postal worker James Hannivan shot and wounded two employees at the Adelaide General Post Office, before committing suicide by shooting himself in the head.
April 1927 – Newcastle Tragedy – Mary Buckley was slain by her husband at their Newcastle townhouse while she slept in the same bed as their 16-year-old daughter.
27 October 1927– Squizzy Taylor dies after a shootout with rival gangster Snowy Cutmore in Melbourne.
23 February 1929 – Constable John Holeman was shot in Grenfell St, Adelaide by John Stanley McGrath while taking McGrath's motorcycle and sidecar to the City Watchhouse. Holeman died an hour and a half later; McGrath was sentenced to death, later commuted to life imprisonment, and served 15 years.
26 February 1929 – Father Andrew Thomas Edgar Archur, murders his five children and his wife and then sets fire to their house in Devonport, Tasmania. He killed himself after the attack.
12 October 1950 – 40-year-old father Raymond Armanasco killed his wife and five of his children in Collie near Perth. Armanasco was later sentenced to death, later commuted to life imprisonment.
19 September 1952 – Betty Shanks was murdered; she was found the following morning in the front yard of a house on the corner of Thomas and Carberry Streets The Grange. This is one of the classic unsolved Queensland cases
11 May 1953 – Caroline Grills was arrested and charged with the attempted murder of her sister-in-law Mrs Eveline Lundberg and Lundberg's daughter Mrs Christine Downey, both of Redfern; the attempt had been made with thallium, a poison commonly found in rat bait. The symptoms of thallium poisoning included loss of hair, nervous disorders, progressive blindness, loss of speech and eventual death. Both Downey and Lundberg suffered these symptoms for some time, recovering only when Mrs Grills did not visit.
18 February 1957 - Marian Majka killed his wife Gisella and their five-year-old daughter Shirley with a knife and hammer at Cannon Hill, Queensland. He then waited until neighbour Neil Irvine had gone to work, set fire to his house, then took a .30 calibre semi-automatic rifle across the road and shot and killed his wife Belinda, 12 year old daughter Annie, 9 year old daughter Belinda, and 10 year old Lynette Karger, who regularly stopped in at the Irvine house to walk to the nearby Cannon Hill Primary school with the Irvine children, and wounded youngest daughter Elaine, 6 months old. He set the bodies on fire, shot the Irvine's dog and opened fire on firefighters, passers-by and passing cars, barely missing another child. When Sergeant Jack Strickfuss approached the house, Majka killed himself.
December 1957 – Sundown Murders: Sally (Thyra) Bowman, her 14-year-old daughter Wendy Bowman and family friend Thomas Whelan were shot and bashed to death at Sundown Station in northern South Australia outback by Raymond John Bailey. Bailey had his wife and young son with him, and had told another traveller on the Alice Springs road that he was heading north looking for work. Bailey was subsequently arrested in Mount Isa, Queensland on 21 January 1958, extradited to South Australia, convicted of the killings and hanged at Adelaide Gaol on 24 June 1958.
5–6 May 1964 – An entire family is found gassed to death in their Warwick home. Among the dead are Herbert Darnley, his wife Joyce, and their five children, the youngest being only 3 years old. Prior to entering the gas-filled house, a friend of Darnley found a note on the door of the scene.
1966 – Keith Ryrie murdered 18-year-old Maureen Ferrari and five-year-old Rhonda Irwin.
8 May 1969 – 15-year-old Alfred James Jessop strangled eight-year-old Vicki Barton after she refused to have sex with him at a vacant block in Lawson, NSW. He then used his bicycle trailer to carry her body to bushland where he buried her; he was sentenced to life imprisonment in 1978 and was paroled in 2003.
1 July 1970 – Elmer Crawford electrocuted and bludgeoned his pregnant wife, three children and unborn child to death at their home in Cardinal Rd, Glenroy, before putting the bodies in his car and pushing the car over a cliff at Loch Ard Gorge. He remained on the run as of December 2011.
6 September 1971 – Clifford Cecil Bartholomew shot dead his wife Heather, their seven children, his sister-in-law and his nephew with a .22-caliber rifle at their dairy farm in Hope Forest, South Australia.
6 October 1972 – Faraday School kidnapping – a teacher and her six female pupils were kidnapped for $1 million ransom in rural Victoria by unemployed friends Edwin John Eastwood and Robert Clyde Boland.
1974 – Barbara McKulkin & her two daughters disappeared in Brisbane and were never seen again, presumed murdered; possible links to the Whiskey A Go Go nightclub bombing (unsolved).
4 July 1975 – Juanita Nielsen Disappearance – Kings Cross newspaper publisher Juanita Nielsen disappears after running a campaign against local development and investigating links between developers and criminal activity (unsolved).
25 December 1975 – Savoy Hotel Fire: Reginald John Lyttle set fire to newspapers in a hotel in Kings Cross. 14 died from carbon monoxide poisoning and one from burns in the fire.
22 September 1976 – William Robert Wilson shot dead 17-year-old Monika Schleus and 18-year-old Marianne Kalatzis and wounded Donald William Hepburn Galloway, Mavis Ethel Sanders, Virginia Hollidge and Quinto Alberti on Boundary Street, Spring Hill, Brisbane. After arming himself with a .22 calibre rifle and 500 rounds of ammunition he arrived at Boundary Street around 12.30 pm and began shooting randomly in a milk bar and a neighbouring shop before being captured by heavily armed police around 4:15 pm at a suburban house where Wilson was holding a man and four young women hostage. Wilson served three years in a mental hospital and after being found fit for trial, pleaded guilty and was sentenced in 1980 to two consecutive life sentences for the murders and concurrent 10 years sentences for the four attempted murders.
16 December 1976 – Faraday kidnapper Edwin Eastwood escaped from Geelong Prison after stealing a car; on 15 February 1977, he kidnapped a teacher and nine pupils from the Wooreen State School in Gippsland, Victoria, before taking another six hostages in 20 minutes. He demanded a ransom of US$7 million, guns, 100 kilograms of heroin and cocaine, and the release of seventeen inmates from Pentridge Prison; However, one of the hostages escaped and notified police, Eastwood fled with the remaining hostages, and after the campervan was disabled by police gunfire at Woodside, Eastwood was shot below the right knee and re-captured by police.
15 July 1977 – Donald Mackay disappearance – Anti-drugs campaigner Donald Mackay from Griffith, New South Wales disappeared, presumed murdered. James Frederick Bazley was sentenced to three consecutive terms of life imprisonment plus 12 years without the possibility of parole in 1986 for the murder of Mackay, the murders of Crown witnesses Douglas and Isabel Wilson on 13 April 1979, and the armed robbery of $260,000 from a security van in 1978; he died of cancer on 8 November 2001.
22 June 1982 – Perth Mint Swindle – Robbery of 49 gold bars valued at up to A$653,000(at the time) from the Perth Mint in Western Australia. Three brothers, Ray, Peter and Brian Mickelberg, were found guilty of the conspiracy and sentenced in 1983 to twenty, sixteen and twelve years imprisonment respectively; all three were later exonerated.
23 June 1983 – Martin Leach bound, gagged and stabbed Charmaine Ariet and bound, gagged, stabbed, raped and slit the throat of her cousin Janice Carnegie before burying their bodies in a gully at Berry Springs.
6 October 1983 - Mother-of-two Edwina Boyle disappeared from her Dandenong home; it was determined that her husband, Frederick Boyle, had shot her in the back of the head with a .22 calibre rifle to engage in an affair with a neighbour, and had concealed her remains in a barrel until they were found in 2006.
31 January 1984 – Sydney's 1984 'Dog Day Afternoon' – 35-year-old Hakki Bahadir Atahan went on a bank robbery spree, taking 11 people hostage, and holding police at bay for several hours before being shot dead by a police sniper on the Sydney Harbour Bridge.
1 June 1984 – Wahroonga murders – A Wahroonga man, John Brandon, murdered his three children, his wife and his mother before killing himself.
14 August 1984 – Fine Cotton Affair – A syndicate of trainers and bookmakers substituted one horse for another at a Brisbane horse race.
2 September 1984 – Milperra massacre – Two rival bikie gangs staged a shoot-out in the car park of a south-western Sydney hotel. 7 people were shot dead and 28 others injured.
6 November 1984 - Murder of Kylie Maybury - six-year-old Melbourne schoolgirl Kylie Maybury is kidnapped, raped and murdered after being sent on an errand to buy a bag of sugar (unsolved)
9 May 1985 – Christopher Flannery disappearance – Known as "Mr-Rent-A-Kill", Melbourne hitman Christopher Dale Flannery disappears without trace, presumed murdered (unsolved).
2 February 1986 – Anita Cobby murder – Sydney nurse Anita Cobby was abducted, robbed, raped, brutalised and murdered by career criminals John Travers, Michael Murdoch and brothers Michael, Gary and Leslie Murphy.
19 August 1986 – Samantha Knight disappearance – 9-year-old Samantha Knight disappeared from a Bondi street; it was claimed by her kidnapper, convicted paedophile Michael Guider, that he had accidentally overdosed her on sedatives. He received 17 years' imprisonment with a non-parole period of 12 years for manslaughter, to be served cumulatively with sentences for child sex offences. Knight's remains have not been found.
6 October 1986 – Mary Nielson, first victim of David and Catherine Birnie, is killed. The Birnies murdered three more women before being captured, and are suspected of killing up to eight women.
23 January 1987 – Richard Maddrell shot dead four teenage women with his shotgun in the Sydney suburb of Pymble.
15 July 1987 – 21-year-old Rodney Thomas Clarke raped nine-year-old Deborah Keegan 3 times before suffocating her in her home in western Sydney, which she shared with her three sisters and mother.
7 September 1988 – 17-year-old Sandra Peresan and her 18-year-old boyfriend Shane Bentley were abducted by Van Hung Tran. While Bentley was left uninjured, Peresan was raped and stabbed to death.
8 September 1988 – Murder of Janine Balding – 21-year-old Balding was abducted, robbed, raped and murdered by five homeless youths in Sydney's west. Stephen "Shorty" Jamieson, 16-year-old Matthew Elliott, and 14-year-old Bronson Blessington were convicted of Balding's murder and sentenced to life imprisonment plus 25 years without the possibility of parole.
25 September 1988 – Dennis Rostron shot dead his wife Cecily, his sons two-year-old Preston and one-year-old Zarack, and his in-laws Dick and Dolly Murrumurru at a remote Arnhem Land outstation in Oenpelli, Northern Territory.
October 1989 – Sylvia Jill Cave disappeared while on holidays in Melbourne. In June 1993, her body was discovered at a property in Mount Eliza; her American boyfriend Michael Jeffrey Rice was sentenced to ten years imprisonment with a non-parole period of six years for manslaughter.
November 1989 – Leigh Leigh murder – Newcastle teenager Leigh Leigh was raped and murdered at a party on a Newcastle beach.
10 October 1990 – Fiona Burns and John Lee were found stabbed to death at a truck parking bay near Kaniva. (unsolved)
13 April 1991 – Karmein Chan kidnapping and murder (unsolved)
25 May 1991 – 21-year-old English backpacker Fiona Carty was sexually assaulted and throttled to death by car thief and con-artist David Troy Masters.
29 June 1991 – Six-year-old Sheree Beasley was kidnapped and raped and murdered by serial flasher and sex offender Robert Lowe at Rosebud.
4 July 1991 – World famous heart surgeon Victor Chang was murdered in Sydney during an extortion attempt.
17 August 1991 – Strathfield massacre – Wade Frankum shot six people dead and stabbed to death another before killing himself in a Sydney shopping centre.
27 July 1992 – Brian Corrigan shot dead his pregnant wife Kim and their unborn daughter at their Kiama home.
29 July 1992 – Burwood triple murder – Ashley Coulston tied up Peter Dempsey Kerryn Henstridge and Anne Smerdon with hand cuffs and thumb cuffs and murdered them by shooting them in the back of their heads with a sawn off 22 calibre semi automatic rifle fitted with a home made silencer in a house in the suburb of Burwood Victoria.
16 August 1992 – 18-year-old Clinton Trezise was bashed to death with a hammer by John Justin Bunting at Bunting's Salisbury North home in the first of the twelve Snowtown killings; Trezise's remains were found in a shallow grave on a farm in Lower Light exactly two years later, but he is not identified until 1999 (see below[where?]).
17 January 1993 – Jason Paul Clarke murdered in Woonona NSW. Geoffrey Colin Moore sentenced to 17 years prison, 10 years non-parole.
7 February 1993 – Greenough Family Massacre – Karen McKenzie and her three children were murdered at their remote rural property in Western Australia by former farmhand William Patrick Mitchell.
30 March 1993 – Cangai siege – Murderers Leonard Leabeater, Robert Steele and Raymond Bassett held hostages in a siege at Cangai, near Grafton, threatening to kill people indiscriminately. Leabeater killed himself the following day, while Steele and Bassett surrendered to police. Steele was sentenced to five consecutive life sentences plus 12 years without parole, while Bassett was sentenced to two consecutive life sentences with a non-parole period of 34 years; Steele hanged himself in prison on 23 December 1994.
June and July 1993 – The Frankston serial killer, Paul Denyer, murdered three women before being captured.
5 August 1993 – Gunn-Britt Ashfield and Austin Allan Hughes bashed Ashfield's 6-year-old son John to death in their Nowra home.
21 August 1993 – John Lascano shot dead three people at a gunshop at the Melbourne suburb of Springvale before stealing a large quantity of firearms and ammunition and setting the store alight.
29 November 1993 – Edwin Street suffocated his wife Dawn in their Annandale home before dumping her body at a creek near Wollstonecraft; three months later, Street stabbed his girlfriend Linda Whitton, whose body was found inside a suitcase at Whitton's home in Enmore on 23 February 1994 when the home was searched by police. Street was convicted of both murders, sentenced to two consecutive terms of life imprisonment without parole, and died of bowel cancer on 20 March 2007.
29 November 1993 – Jolimont Centre siege – Felipe Ruizdiaz shot and wounded Geoff McGibbon at Dickson before crashing his vehicle rigged with petrol and gas canisters through the front glass walls of the Jolimont Centre in Canberra. During a two-hour siege at the Centre, Ruizdiaz shot at police and rescue workers using a 12-gauge shotgun before setting fire to the building and committing suicide. The fire and explosions hampered rescue and police efforts and caused several million dollars worth of damage to the centre.
2 March 1994 – NCA Bombing – A parcel bomb explodes at the Adelaide office of the National Crime Authority, killing Detective Sergeant Geoffrey Bowen and injuring lawyer Peter Wallis. Dominic Perre was detained but released due to lack of evidence (unsolved).
8 May 1994 – Fiona Harvey was found beaten to death on the stairs of a motel in Kings Cross.
22 August 1994 – Kyle and Latisha O'Neill were shot dead as they slept by their father Norm in a double murder-suicide in Stirling, Western Australia.
5 September 1994 – Sydney politician John Newman was assassinated outside his home on the orders of political rival Phuong Ngo.
17 September 1994 - 13 year-old William Mara is killed in a hit and run.
28 March 1995 - University student Frances Tizzone is murdered by her ex-boyfriend John Serratore.
29 October 1995 – 10-year-old Leanne Oliver and nine-year-old Patricia Leedie were raped and beaten to death by local handyman, mechanic and convicted sex offender Paul Stephen Osbourne at Warana Beach, Queensland.
25 January 1996 – Hillcrest murders – Peter May shot and killed his three children, his estranged wife and her parents in the Brisbane suburb of Hillcrest before killing himself.
January 1996 – March 1997 – The Claremont serial murders – unsolved murders of two young Australian women and the unresolved disappearance of a third in 1996 and 1997 in Claremont
6 October 1997 – Bega schoolgirl murders – 14-year-old Lauren Barry and 16-year-old Nichole Collins were kidnapped, raped, tortured and murdered by New Zealand-born career criminal Lindsay Beckett and Victorian prison escapee Leslie Camilleri.
12 June 1998 and 19 June 1998 – Mark Valera tortured and murdered Albion Park shopkeeper David O'Hearn and former WollongongLord MayorFrank Arkell. Mark's sister Belinda van Krevel later 'asked' boyfriend Keith Schreiber to murder her father Jack van Krevel in retaliation for alleged sexual assault claims.
16 August 1998 – Victorian police officers Gary Silk and Rodney Miller were shot dead in an ambush by Bendali Debs and Jason Joseph Roberts in the Moorabbin Police murders.
3 February 1999 – Phillip John McCormack was bashed to death in the southern suburbs of Adelaide by Brett Stuart Williams and Lawrence Hersbach in the driveway of Williams' home. Police found McCormack's body in a grave at Owen on 27 May 1999. All three were small-time criminals involved in the drug trade.
20 May 1999 – The Snowtown murders were uncovered when the remains of eight bodies were found in six acid-filled barrels in a disused bank vault in Snowtown, South Australia, and the remains of two more bodies were later discovered under a brick rainwater tank stand at a Salisbury North property, bringing the total number of victims to 12.
3 August 1999 – La Trobe University shooting – Jonathan Brett Horrocks walked into the cafeteria in La Trobe university in Melbourne Victoria armed with a 38 caliber revolver handgun and opened fire killing Leon Capraro the boss and manager off the cafeteria and wounding a woman who was a student at the university.
15 September 2000 – The activities of serial paedophile Geoffrey Robert Dobbs were exposed after he brought a VCR with a jammed cassette into a Melbourne electronics store for repair; police later determined that Dobbs molested at least 63 girls, including five family members, aged between one month and 15 years in Queensland between 1972 and 2000 while acting as a teacher and youth leader. Dobbs was sentenced in July 2003 to two consecutive terms of indefinite imprisonment with a nominal sentence of 30 years.
10 July 2001 – Sef Gonzales bashed, stabbed and strangled his sister Clodine, mother Mary and father Teddy within two and a half hours in their North Ryde home in Sydney, NSW.
12 July 2001 – Carolyn Matthews was repeatedly stabbed on the front lawn of her West Lakes home by David William Key on the orders of her husband, Kevin, and his lover, Michelle Burgess, to maintain their affair.
16 July 2001 – Peter James Knight an anti abortion activist walked into an abortion clinic in East Melbourne armed with a rifle and shot dead a security guard Stephen Gordon Rogers, he was later overpowered by staff in the abortion clinic and was later arrested. He was later charged and convicted of murder and was sentenced to life in prison.
1 September 2001 – Former CIB chief Don Hancock and his friend Lou Lewis are killed in a car bombing in Perth, Western Australia.
April 2003 – Pong Su incident: A North Korean freighter was boarded after four-day chase and taken into custody in connection with a worldwide heroin smuggling operation.
30 November 2003 – Cyclist Ian Humphery was stuck and killed by Eugene McGee along the Kapunda Road, South Australia. Due to the controversy over McGee's later conviction and the public protests it ignited, the South Australian Government ordered a Royal Commission into the incident and the trail.
7 December 2003 – Daniel Morcombe is abducted from under an overpass on the Sunshine Coast, Queensland while waiting for a bus; his remains were not found until 2012.
31 December 2003 – convicted paedophile Jeffrey John Hillsley bashed former coworker Michael Davies to death with a hammer at Campsie, NSW and kidnapped and raped his 10-year-old stepdaughter before being captured by special operations police after a 14-hour siege.
14 February 2004 – 2004 Redfern riots – Aboriginal youths rioted against police in response to the death of 17-year-old TJ Hickey, who accidentally impaled himself on a fence while fleeing police he mistakenly believed to be pursuing him.
March 2004 – Darwin sex workers Phuangsri Kroksamrang and Somjai Insamnan were bound with cable ties and thrown alive into the Adelaide River by Ben William McLean and Phu Ngoc Trinh.
23 March 2004 – John Sharpe murdered his pregnant wife, two-year-old daughter and unborn son with a speargun at Mornington, Victoria.
26 July 2004 – Security guard Karen Brown shot dead armed robber William Aquilina in a Sydney carpark after he violently bashed her and stole the hotel's takings. Brown was charged with murder but acquitted on the grounds of self-defence.
11 February 2005 – Melbourne woman Maria Korp was found in a coma in the boot of her car. Her husband Joe and his lover, Tania Herman, were subsequently charged with her murder after Mrs Korp's life-support was switched off. Joe Korp subsequently hanged himself in the garage of his home.
26 February – 1 March 2005 – Macquarie Fields riots – residents of the south western Sydney suburb rioted in response to the deaths of two youths, who were passengers in a stolen car being driven by a known criminal, during a police pursuit. Residents believed police were unfairly persecuting local youths.
30 May 2005 – Toowoomba triple murder – the bodies of three men, two aged 17 and one aged 30, were found in a house in Toowoomba, Queensland; the three men were beaten to death with metal bars and a hammer and are beaten beyond recognition, with dental records being needed to identify the victims. The murders were committed by three male youths, two aged 16 and one aged 17. One of the 16 year olds and the 17 year old are charged with three counts of murder while the other 16 year old is charged with one count of murder.
5 November 2005 – Sydney teenager Lauren Huxley was severely bashed and doused with petrol in her home by Robert Black Farmer.
December 2005 – 2005 Cronulla riots – rioting by European Australians and Arab Australians directed against each other were sparked by the reported bashing of Surf Life Savers the previous week by several individuals of "middle-eastern appearance"; retaliatory and counter-retaliatory violence continued for two weeks.
20 February 2006 – Errol Graham Hayes set fire to a house at Annerley, Queensland after an argument; his former girlfriend, Theresa Marchetti, her new partner, Mark Christensen, and his own 18-month-old son, Joshua Hayes, were killed in the fire.
26 June 2006 – Canning Vale murder – 8-year-old Sofia Rodriguez-Urrutia-Shu was raped and murdered in a suburban Perth shopping mall by Dante Wyndham Arthurs.
18 June 2007 – Melbourne CBD shooting – Christopher Wayne Hudson opened fire on three people, killing one and seriously wounding two others who intervened when Hudson was assaulting his girlfriend at a busy Melbourne intersection during the morning peak. He gave himself up to police in Wallan, Victoria on 20 June.
30 June 2008 – Cowra murders – John Walsh used an axe to murder his wife his grandson aged 7 and his granddaughter aged 5 and then used the axe to attack and try and murder his daughter who is a police officer after she arrived home from work at the house in the town of Cowra, New South Wales. His daughter survived the attack and he is later arrested and is charged with three counts of murder and one count of attempted murder and he is later sentenced to life in prison.
3 December 2008 – 83-year-old pensioner Vonne McGlynn was murdered and dismembered by Angelika Gavare at her home in Reynella, South Australia as part of Gavare's plan to steal McGlynn's identity to take her house and money; McGlynn's remains were found at Christie's Creek on 23 February 2009.
29 January 2009 – Arthur Freeman murdered his four-year-old daughter Darcy by throwing her off the Westgate bridge in Melbourne Victoria. She fell 58 metres in to the water down below where she drowned.
22 March 2009 – Hells Angels bikie member Anthony Zervas was attacked and brutally murdered at Sydney International airport by Commacheros bikie member Mick Hawi and other Commacheros bikie members. He was repeatedly stabbed and bashed over the head with a bollard.
10 April 2010 – Rajesh Osborne shot and killed his three children, 12 year-old Asia, 10-year-old Jarius and 7-year-old Grace before killing himself in Roxburgh, Victoria.
27 April 2010 – Former US Marine Walter Marsh ambushed his boss, Michelle Beets, before slitting her throat and stabbing her eight times in the chest outside her Chatswood home.
1 May 2010 – Brett Nicholas Richard Kuzimski stabbed and strangled Melanie Carle and Kellie Maree Guyler before placing their bodies into a Toyota Land Cruiser and torching it off the Tonkin Highway at Wattle Grove, Western Australia.
1 June 2010 – David Warwick Hopkins stabbed Nicole Miller in the neck and set her alight at a petrol station in Bayswater, Victoria; Miller died of her injuries in hospital.
8 November 2010 – Kapunda triple murder – Jason Alexander Downie repeatedly stabbed and killed Andrew, Rose and Chantelle Rowe in a frenzied attack at their home in Kapunda, South Australia.
29 January 2011 – Valentina Strabach, a paranoid schizophrenic woman, brutally murdered 79 year old Murray Quartermaine by stabbing him 234 times in his South Perth home before cutting off his toes and genitals.
10 August 2011 – convicted drug dealer Peter Dent is stabbed multiple times by two men in his Hamilton South home. Dent died four days later in hospital from his injuries.
7 September 2011 - 48 year old Kim Patterson murdered her 14-year-old daughter Sidonie Thompson with an axe in her bed in their Paddington home before driving to the Brisbane Story Bridge where she took her own life by jumping; her 12 year old son remained in the stationery car.
18 November 2011 – Roger Kingsley Dean deliberately set fire to two rooms at the Quakers Hill Nursing Home to hide his theft of prescription drugs; 11 residents were killed in the blaze and eight others injured. Dean pleaded gulity and was sentenced to eleven consecutive sentences of life imprisonment plus 12 years without parole.
5 December 2011 – Heather Glendinning murdered her two daughters, 12-year-old Jane Cuzzens and 10-year-old Jessica Cuzzens and then killed herself in Port Dennison Western Australia.
29 January 2012 – Giovanni Focarelli, son of Comancheros gang member Vincenzo Focarelli, was shot dead whilst Vincenzo survived the fourth attempt on his life.
28 April 2012 – A man opened fire in a busy shopping mall in Robina on the Gold Coast shooting Bandidos bikie Jacques Teamo. A woman who was an innocent bystander was also injured from a shotgun blast to the leg. Neither of the victims died, but the incident highlighted the recent increase in gun crime across major Australian cities including Sydney, Brisbane and Adelaide.
22 May 2012 – A man and two young children were found dead by police in a house in Leanyer, Northern Territory. The 23-year-old man was the father and stepfather of the two children, a boy and a girl, aged 4 and 8.
23 May 2012 – Christopher 'Badness' Binse, a career criminal well known to police, was arrested after a 44-hour siege at an East Keilor home in Melbourne's north west. During the siege, Binse fired several shots at police and refused to co-operate with negotiators; eventually tear gas had to be used to force him out of the house, at which point he refused to put down his weapon and was then sprayed with a volley of non-lethal bullets.
22 September 2012 – Radio producer Jill Meagher was raped and murdered by convicted criminal Adrian Bayley. She was abducted while walking approximately five minutes to her home from a bar on Sydney Road in Brunswick, Victoria a suburb north of Melbourne. Her body was buried in a shallow grave along the road verge of Blackhill Road, Gisborne South.
4 December 2012 – Quorn murders - Jose Omonte Extrada murdered his girlfriend Rebecca Wild by stabbing her 29 times and striking her over the head with an axe 9 times, and murdered Jasinta Leigh Fullerton by repeatedly striking her over the head with the axe after she intervened to try and help his girlfriend who she saw being attacked by him in Quorn, South Australia.
15 December 2012 – Aaron Carlino murdered drug dealer Stephen Cookson in his East Perth home by shooting him twice in the head and then he cut up and dismembered his body. He buried his arms legs and torso in the backyard of his house and he wrapped his head in a plastic bag and dumped it on Rottnest Island. The head of Cookson was later found washed up on Rottnest Island by an 11 year old girl. Carlino was convicted of the murder and was sentenced to life in prison.
8 March 2013 – Queen Street mall siege – Lee Matthew Hiller entered the shopping mall on Queen Street Brisbane Queensland armed with a revolver and threatened shoppers and staff with the revolver, causing a 90 minute siege which ended when Hiller was shot and wounded in the arm by a police officer from the elite Specialist Emergency Response Team. Hiller was then later taken to hospital and was treated for his injury; he pleaded gulity to 20 charges and was sentenced to four-and-a-half years in jail with a non-parole period of two years and three months.
29 July 2013 – Two bikie gang associates, Vasko Boskovski and Bassil Hijazi were shot dead in two separate shooting incidents minutes apart in South West Sydney. The previous week Bassil Hijazi had survived a previous attempt against his life after he was shot inside his car.
29 December 2013 – Lesley John Cameron raped and murdered Tamara Horstman by bashing her over the head with hammer and stabbing her 11 times with a pair of scissors, 6 times in the heart and 5 times in the neck and murdered her mother Maureen Horstman by bashing her over the head with a hammer and stabbing her once in the heart with a pair of scissors in their Warwick home in Western Australia.
19 February 2014 – Thomas Hemming murdered Robert and Cheryl Adamson by stabbing them to death in their Murrumbeena, Victoria home.
27 March 2014 – 21 year old French student Sophie Collombet was raped and brutally murdered from being bludgeoned to death in a park in Brisbane. Benjamin James Milward is later arrested and is charged with her murder.
4 September 2014 – A fire that was deliberately lit killed three people and seriously wounded three other people in Sydney. Two of the victims killed were a young mother Bianka O Brien and her baby son Jude. Adeel Khan a shop owner was arrested and charged.
9 September 2014 – Lockhart massacre – Geoff Hunt shot and killed his wife, Kim, his 10-year-old son Fletcher, and his daughters Mia, eight and Phoebe, six before killing himself on a farm in Lockhart in the Riverina district near Wagga Wagga New South Wales. The body of Geoff Hunt and a firearm are later found in a dam on the farm by police divers and a suicide note written by Geoff Hunt is also found inside the house on the farm.
24 September − 2014 Endeavour Hills stabbings –Two Police officers, one Victorian, one Australian Federal Police (AFP) are stabbed and wounded outside Endeavour Hills Police station in Melbourne by 18 year old Numan Haider. After stabbing the officers Haider was shot dead by the wounded Victorian officer.
5 October 2014 – Marcus Peter Volke murdered his transgender partner Mayang Prasetyo, then dismembered the body and boiled the body parts in the kitchen of the house where he and his partner lived in the suburb of Teneriffe, Queensland. Volke later committed suicide by cutting his throat.
22 October 2014 – Wedderburn shootings – Ian Jamieson shot dead Peter Lockhart, Peter's wife Mary and Mary's son Greg Holmes on two farm properties in Wedderburn, Victoria over a property dispute. Jamieson surrendered to police after a three-and-a-half hour siege.
7 November 2014 - Jordy Brook carjacked a Channel 7 news cameraman at gun point during a crime spree on the Sunshine Coast, Queensland. He was later captured and arrested by police after luring police on a high speed chase and crashing the car.
8 November 2014 - Brendan John Lindsay, a drug addict with a history of mental illness, took lunch bar worker Sheila Tran hostage at knife point in Carlisle, Western Australia. While taking the woman hostage he made threats to kill her, and entered a siege with police which ended with Lindsay being shot dead after he stabbed the hostage, Sheila Tran. Sheila Tran was also caught in the crossfire and was later taken to Royal Perth Hospital and underwent surgery.
12 November 2014 - Joelene Joyce and Jamie Edwards a married couple who were drug dealers are found shot dead in a car on a highway in the town of Moama, New South Wales.
15 December 2014 - 2014 Sydney hostage crisis – Seventeen people were taken hostage in a cafe in Martin Place, Sydney by Man Haron Monis. The hostage crisis was resolved in the early hours of 16 December, sixteen hours after it commenced, when armed police stormed the premises. Monis and two hostages were killed in the course of the crisis.
19 December 2014 – Cairns child killings – The bodies of eight children aged between 18 months to 15 years were found stabbed to death in a home in Cairns Queensland.
3 March 2015 – Biddeston murders – Derek Sharpely shot and killed his pregnant 27 year old daughter and 7 year old Grandson before killing himself in Biddeston Queensland.
17 March 2015 – 17 year old schoolgirl Masa Vukotic was stabbed to death in a random attack while she walked through a park in Doncaster Victoria, Sean Christian Price is later arrested and charged with her murder.
^E. R. Baker; P. I. Rose (2000). "Opas, David Louis (1936–1980)". Australian Dictionary of Biography. National Centre of Biography, Australian National University. Retrieved 8 September 2014. About 7 p.m. on 23 June 1980, ... Opas answered a call at the security gate to the courtyard of his Woollahra home. When he opened the gate, he was shot in the abdomen by a single bullet from a .22-inch (5.6 mm) calibre rifle. He died that night ...