1811 in Australia
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- Governor of New South Wales – Lachlan Macquarie
- Lieutenant-Governor of Tasmania – unfilled until 1813
- 1 February – John Oxley is appointed Surveyor-General of New South Wales.
- 2 December – Reverend Samuel Marsden sent the first commercial shipment of wool from New South Wales to England.
Exploration and settlement
- 1 December – During a tour of Van Diemen's Land, Governor Macquarie gave directions for the layout of Hobart. There was a central square and seven streets named Macquarie, Liverpool, Argyle, Elizabeth, Murray, Harrington and Collins.
- 5 April – Thomas Reibey, husband of Mary Reibey, leaving her in control of large colonial business enterprises.