See also: 1918 in Australia, other events of 1919, 1920 in Australia and the Timeline of Australian history.
Monarch – King George V
Governor-General – Sir Ronald Munro-Ferguson
Prime Minister – Billy Hughes
Premier of New South Wales – William Holman
Premier of Queensland – T. J. Ryan (until 22 October), then Ted Theodore
Premier of South Australia – Archibald Peake
Premier of Tasmania – Walter Lee
Premier of Victoria – Harry Lawson
Premier of Western Australia – Sir Henry Lefroy (until 17 April), then Sir Hal Colebatch (until 17 May), then James Mitchell
Governor of New South Wales – Walter Davidson
Governor of Queensland – Hamilton Goold-Adams
Governor of South Australia – Sir Henry Galway
Governor of Tasmania – Francis Newdegate
Governor of Victoria – Sir Arthur Stanley
Governor of Western Australia – William Ellison-Macartney
1 March – The Potts, believed to be the world's longest running cartoon strip drawn by the same artist, is first published in The Sun News-Pictorial.
24 March – one of the most notable incidents of the Red Flag Riots occurred in Brisbane, Queensland, when a crowd of returned servicemen clashed with police. The incident had been sparked the previous day by a socialist demonstration against the continued operation of the War Precautions Act, which had angered many of the returned soldiers.
1 June – A mutiny occurs on board the Royal Australian Navy battlecruiser HMAS Australia shortly after it arrives in Fremantle, Western Australia.
28 June – The Treaty of Versailles is signed in France, bringing Australia's involvement in World War I to an end.
18 October – Sir Adrian Knox is appointed Chief Justice of the High Court.
28 October – The Treaty of Peace (Germany) Act 1919 receives Royal Assent, confirming Australia's membership as a sovereign nation in the new League of Nations, and indicating Australia's independence from the United Kingdom.
10 December – Keith and Ross Smith, piloting a Vickers Vimy, reach Darwin at the end of the first England to Australia flight.
19 December – A federal election is held. The incumbent Nationalist Party of Billy Hughes defeats the Australian Labor Party of Frank Tudor.
24 December – The Electrical Trades Union of Australia is federally registered under the Commonwealth Conciliation and Arbitration Act, 1904.
The worldwide Spanish flu epidemic continues, eventually claiming almost 12,000 lives in Australia.
At the Paris Peace Conference, 1919 Australian delegates succeed in excluding recognition of the principle of racial equality in the League of Nations Covenant.
Arts and literature
10 September – J. F. Archibald, founding editor of the The Bulletin dies, bequeathing money which would be used to award the Archibald Prize for portraiture.
Elioth Gruber wins the Wynne Prize for his work, Spring Frost.
4 October – The Sentimental Bloke premieres in Melbourne.
Balmain win the 1919 NSWRFL Premiership
11 November – Artilleryman wins the Melbourne Cup
January 1919 – A.R.F. Kingscote wins the Australian Open
6 January – Geoffrey Bingham, author and Anglican minister (died 2009)
3 February – Bill Alley, cricketer (died 2004)
16 February – Keith Carmody, cricketer (died 1977)
22 February – Mary Maguire, actress (died 1974)
1 March – Reg Sprigg, geologist (died 1994)
20 March – Pat Norton, backstroke swimmer (died 2007)
25 March – William Wade, NSW politician
28 March – Tom Brooks, cricketer (died 2007)
10 April – Vernon Wilcox, politician (died 2004)
1 May – Lance Barnard, Deputy Prime Minister (died 1997)
15 May – Tom Drake-Brockman, politician (died 1992)
22 May – Peter Howson, politician (died 2009)
28 May – Olga Masters, writer (died 1986)
24 June – Fabian "Fabe" McCarthy, rugby union footballer
14 September – Gil Langley, cricketer (died 2001)
6 October – Abe Saffron, Sydney crime figure (died 2006)
7 October – Zelman Cowen, Governor General of Australia
5 November – Thomas O'Dwyer, cricketer (died 2005)
19 November – Margaret Whitlam, wife of Gough Whitlam
7 December – Wilfred Arthur, World War II fighter ace (died 2000)
10 December – Jean Lee, last woman executed in Australia (died 1951)
17 December – Geraldine Halls (pen name: Charlotte Jay), mystery novelist (died 1996)
29 December – Malcolm Mackay, politician (died 1999)
4 February – Richard Bowyer Smith (born 1837), inventor
20 March – Sir Edward Charles Stirling (born 1848), anthropologist
8 June – Henry Briggs (born 1844), WA politician
21 June – Sir Thomas à Beckett (born 1836), solicitor and judge
25 July – Nat Gould (born 1857), British novelist
25 July – Samuel McCaughey (born 1835), pastoralist
30 July – Sir Simon Fraser (born 1832), politician
4 August – Dave Gregory (born 1845), cricketer
10 September – J.F. Archibald (born 1856), publisher and journalist
12 September – John Mark Davies (born 1840), Victorian politician
24 September – Frank Laver (born 1869), cricketer
7 October – Alfred Deakin (born 1856), Prime Minister of Australia
25 October – William Kidston (born 1849), Premier of Queensland (1906–1907, 1908–1911)
2 November – Mephan Ferguson (born 1843), manufacturer
20 December – Sir Philip Fysh (born 1835), Premier of Tasmania (1877–1878, 1887–1892)
25 December – Sir Edwin Thomas Smith (born 1830), SA politician
1919 in Australia Wikipedia (Text) CC BY-SA