7 February — Tasmanian Electoral Act introduced the secret ballot, which was known elsewhere, in particular in the United States as the "Australian ballot"
19 March — The Electoral Act 1856 introduced the secret ballot in Victoria
1 January – The name Tasmania officially adopted to replace Van Diemen's Land which was felt to have too many convict connotations.
8 June – Pitcairn Islanders arrived on Norfolk Island; the last convict had left and the island was no longer a penal colony. Queen Victoria granted the island to the Pitcairners as a home. Bounty Day is celebrated each year in Norfolk Island to commemorate the event.
Suburb of Goodna founded in Queensland, Australia – Originally part of NSW, its 150-year anniversary was celebrated in 2006.