Portal:Australia/Anniversaries/May/May 13
- 1787 – The First Fleet leaves Portsmouth, England, for New South Wales, with the intention of establishing the first European settlement in Australia.
- 1861 – John Tebbutt, of Windsor, New South Wales, discovers what would become known as the "Great Comet of 1861".
- 1932 – Sir Philip Game, the Governor of New South Wales, dismisses the Labor Party government of Jack Lang (pictured), the Premier of New South Wales.
- 1962 – Paul McDermott, the comedian, performer, and television host, is born in Adelaide.
- 1965 – Following the 1965 state election, Bob Askin is sworn in as Premier of New South Wales, leading for the first time a coalition of the Liberal Party and the Country Party.
- 2012 – A resident of Old South Head Road, Sydney, Don Ritchie, who successfully intervened in at least 160 suicide attempts at The Gap, dies aged 86.