Portal:Australia/Anniversaries/August/August 21
- 1842 – Hobart was proclaimed a city.
- 1943 – Enid Lyons and Dorothy Tangney are the first Australian women elected to the Australian House of Representatives and Senate respectively.
- 1984 – The Federal budget is televised for the first time.
- 2005 – Michelle Leslie is arrested in Bali after being found with two ecstasy pills in her handbag at an open-air dance party just outside of Kuta.