1912 in Australia

The following lists events that happened during 1912 in Australia.

6 January – First aircraft crash in Australia, between Mount Druitt and Rooty Hill. 18 January – Tramway Employees Association members are dismissed for wearing union badges to work—the ensuing protest marks the beginning of the 1912 Brisbane general strike. 4 February – Police officers and special constables attack protesters and strikers at Market Square in Brisbane during the 1912 Brisbane general strike. The day becomes known as "Baton Friday" and later, "Black Friday". 13 April – Francis Birtles becomes the first person to cross the Nullarbor Plain by car. 24 April – The NSW government grants of land for the construction of a zoological garden, later known as Taronga Park. 30 May – The light cruiser is launched in England. 15 July – The first branches of the Commonwealth Bank open in Melbourne and country Victoria. The Prime Minister, Andrew Fisher, is the bank's first account holder and depositor. 19 September – An amended version of the coat of arms of Australia is granted Royal Assent by George V. The Golden Wattle is declared Australia's floral emblem. 10 October – The Maternity Allowance Act 1912 is passed, granting a "Baby Bonus" of five pounds to the mother of every child born in Australia (indigenous mothers and other non citizens are excluded). 12 October – Forty two people die in the North Mount Lyell Disaster on the west coast of Tasmania.

29 January – New South Wales wins the Sheffield Shield. 5 May to 27 July – Australia sends women to the Olympic Games, the 1912 Summer Olympics in Stockholm, for the first time. Australasia won 2 gold, 2 silver and 3 bronze medals. Fanny Durack won the 100 metres freestyle. Australasia won the men's 4 × 200 m freestyle relay. 17 August – The 1912 NSWRFL Premiership is won by Eastern Suburbs, who defeated Glebe 6–4. 28 September – The Essendon Bombers win the VFL Grand Final—their second consecutive premiership—defeating South Melbourne Swans 5.17 (47) to 4.9 (33). 5 November – Piastre wins the Melbourne Cup.

23 January – Martin Howy Irving, rower and educationist (born and died in the United Kingdom) (b. 1831)
10 February – Thomas Reibey, 11th Premier of Tasmania (b. 1821)
20 February – Albert Bythesea Weigall, headmaster (born in the United Kingdom) (b. 1840)
11 March – Sir William Zeal, Victorian politician and railway engineer (born in the United Kingdom) (b. 1830)
3 April – Philip Argall, cricketer (b. 1855)
20 April – Charles Harper, Western Australian politician, pastoralist and newspaper proprietor (b. 1842)
21 May – Mick Grace, Australian rules footballer (Fitzroy, Carlton, St Kilda) (b. 1874)
5 June – Francis James Gillen, anthropologist and ethnologist (b. 1855)
25 June – William Guilfoyle, landscape gardener and botanist (born in the United Kingdom) (b. 1840)
27 June – George Bonnor, cricketer (b. 1855)
29 June – Frederick Henry Piesse, Western Australian politician, businessman and farmer (b. 1853)
13 September – Joseph Furphy, author and poet (b. 1843)
29 September – James Charles Cox, physician and conchologist (b. 1834)
18 November – Richard O'Connor, New South Wales politician and inaugural High Court justice (b. 1851)
16 December – George Rignold, actor (born in the United Kingdom) (b. 1839)