Portal:Australia/Anniversaries/December/December 26
- 1898 – Gatton murders: Three members of the same family are sexually molested and murdered near the town of Gatton, Queensland (unsolved).
- 1902 – Brisbane is declared a city.
- 1902 – Ada Evans becomes the first female law graduate in Australia.
- 1906 – The world's first feature-length film The Story of the Kelly Gang premieres in Melbourne.
- 1945 – The first Sydney to Hobart Yacht Race is held.
- 1947 – Heard Island and McDonald Islands become administered by Australia.
- 1998 – Astronaut Andy Thomas becomes the first Australian to walk in space.
- 2005 – Death of Kerry Packer, Australia's richest man and the major shareholder in PBL.