1825 in Australia

The following lists events that happened during 1825 in Australia.

Incumbents

 * Monarch - George IV

Governors
Governors of the Australian colonies:
 * Governor of New South Wales – Major-General Sir Thomas Brisbane
 * Lieutenant-Governor of Tasmania – Colonel George Arthur

Events

 * 14 June – Van Diemen's Land is separated administratively from New South Wales.
 * 3 December – Van Diemen's Land becomes fully independent from New South Wales. The Legislative Council of Tasmania is established and George Arthur, former Lieutenant-Governor, is promoted as its first Governor.

Exploration and settlement

 * 4 March – A penal settlement is established on Maria Island, Tasmania.
 * Brisbane is founded.

Deaths

 * 25 February – Aboriginal bushranger, Musquito is hanged at Hobart.
 * 7 December – John Ovens, explorer (b. 1788)