Portal:Australia/Anniversaries/May/May 12
- 1865 – Bushranger John Gilbert shot dead near Binalong, New South Wales.
- 1997 – Susie Maroney become the first person to swim the Florida Straits from Cuba to the United States.
- 2003 – Governor General Peter Hollingworth stands down following accusations that he had attempted to cover up several instances of sexual abuse in the early 1990s during his tenure as Archbishop of Brisbane.