Portal:Australia/Anniversaries/December/December 13
- 1947 – Indian bowler Vinoo Mankad runs out Bill Brown when in the act of delivering the ball. After this incident, if a batsman is given out this way, he is said to have been Mankaded.
- 1962 – The last telegram transmitted within New South Wales using morse code was sent from Sydney to Bombala.
- 2005 – Bradley John Murdoch is convicted of murdering Peter Falconio in the Australian outback whilst travelling with girlfriend Joanne Lees.
- 2005 – Melbourne's Spencer Street Station is officially renamed Southern Cross Station.