1809 in Australia
The following lists events that happened during 1809 in Australia.
- Monarch - George III
- 25 April – First post office in Sydney established. Ex-convict Isaac Nichols is the first postmaster.
- 8 May – Lachlan Macquarie is officially appointed Governor of New South Wales, caretaker William Patterson governs until his appointment begins on 1 January 1810.
- 24 May – Lachlan Macquarie receives his commission as next governor of New South Wales, including instructions to reinstate Bligh temporarily on his arrival.
Exploration and settlement
- Settlement began at O'Brien's bridge near the centre of present-day Glenorchy, Tasmania.
- 5 April – Arthur Edward Kennedy, Governor of Western Australia 1855-62 and Governor of Queensland 1877-1883