Portal:Australia/Anniversaries/April/April 13
- 1829 – Melbourne's first post office opens.
- 1841 – The first photograph was taken in Australia by a visiting naval captain, Captain Augustin Lucas.
- 1855 – The University of Melbourne was established by act of the Parliament of Victoria.
- 1892 – Singer Gladys Moncrieff is born in Bundaberg, Queensland.
- 1982 – Sir Ninian Stephen appointed Governor General.
- 1991 – Schoolgirl Karmein Chan is abducted from her Melbourne home and later found murdered.