- 4 October 1951
Ivanhoe, Victoria, Australia
- Lawyer, Parliamentarian, Barrister and Solicitor
- Alternative Names
- Hadden-Tregear, Dianne Gladys (also known as)
Dianne Hadden was the Independent member for Ballarat Province in the Legislative Council of the Victorian Parliament until 2006. She was elected as a Labor Member in 1999, but resigned from the Australian Labor Party in 2005. She unsuccessfully contested the 2006 state election, held on 25 November, as an Independent in the Legislative Assembly seat of Ballarat East.