1821 in Australia

The following lists events that happened during 1821 in Australia.

Incumbents

 * Monarch - George IV

Governors
Governors of the Australian colonies:
 * Governor of New South Wales- Major-General Lachlan Macquarie until 1 December 1821, succeeded by Thomas Brisbane.
 * Lieutenant-Governor of Tasmania - Colonel William Sorell

Events

 * 3 February – Sir Thomas Brisbane is commissioned as Governor to succeed Macquarie. He replaces Macquarie on 1 December of the same year.
 * February – John Bigge finishes gathering evidence on all aspects of the colonial government, including finances, the church, the judiciary, and the convict system. He then sails back to England.
 * 1 May – The Australian Magazine, Australia's first periodical, begins publication.
 * 27 June – The Philosophical Society of Australasia is established. It would be renamed as the Royal Society of New South Wales in 1866 at the request of Queen Victoria.
 * 29 October – Governor Macquarie lays foundation stone for first Catholic church in Australia, St Mary's.
 * The Female Factory, for women convicts, is separated from the Parramatta Gaol. Many women are selected as brides or for domestic service.
 * Parramatta Marist High School, Australia's first private school, founded by John Joseph Therry.
 * Wool export in Australia - 75,400 pounds.

Exploration and settlement

 * March – Port Macquarie, a penal settlement, was established for convicts that had committed secondary crimes in New South Wales.