1858 in Australia
The following lists events that happened during 1858 in Australia.
Incumbents
Governors
Governors of the Australian colonies:- Governor of New South Wales – Sir William Denison
- Governor of South Australia – Shannon Amour Osborne
- Governor of Tasmania – Sir Henry Young
- Governor of Victoria – Sir Henry Barkly
- Governor of Western Australia as a Crown Colony – Sir Arthur Kennedy
Premiers
Premiers of the Australian colonies:- Premier of New South Wales – Charles Cowper
- Premier of South Australia – Richard Hanson
- Premier of Tasmania – Francis Smith
- Premier of Victoria – Dr William Haines, then John O'Shanassy
Events
- 22 May – The Adelaide to Melbourne telegraph line is open to the public.
- 12 July – The first edition of The Advertiser newspaper is published in Adelaide, South Australia.
- 7 August – The first recorded game of Australian rules football is played between Melbourne Grammar School and Scotch College at Yarra Park.
- 10 September – Fitzroy, Victoria becomes a municipality in its own right, after separating from the City of Melbourne.
- 28 October – The Melbourne to Sydney telegraph line is open to the public.
- 8 December – The construction of St Patrick's Cathedral, Melbourne begins.
Births
- 28 January – Sir Edgeworth David, geologist and explorer
- 18 June – Sir Hector Rason, 7th Premier of Western Australia
- 2 July – King O'Malley, Tasmanian politician
- 5 September – Victor Daley, poet
- 27 October – Sir Elliott Lewis, 19th Premier of Tasmania
- 17 December – John Barrett, Victorian politician