1818 in Australia

See also: 1817 in Australia, other events of 1818, 1819 in Australia and the Timeline of Australian history.

Governors of the Australian colonies:

• Governor of New South Wales- Lachlan Macquarie
• Lieutenant-Governor of Van Diemen's Land - Colonel William Sorell

• January 8 - Governor Macquarie accuses Samuel Marsden of conspiracy against him
• January 26 - First Australia Day celebrations held
• March 3 - Throsby, Hume and Meehan discover and overland route to Jervis Bay
• April 19 - P. P. King discovers Port Essington
• May 28 - John Oxley leaves Bathurst to explore along the Macquarie River

• March 22 - John Ainsworth Horrocks,one of the first settlers of the Clare Valley, is born near Preston, Lancashire.
• May 21 S. T. Gill
• September 5 - Edmund Kennedy
• Date unknown: Eliza Winstanley, Thomas Elder

• 1818
• 1810s