- Occupation Political candidate
Mary Dettman stood as a candidate for the Australian Democrats Party in the Legislative Assembly seat of Kew at the Victorian state election, which was held on 30 November 2002. She was an unsuccessful candidate again for the Australian Democrats in the Legislative Council region of Eastern Metropolitan at the election which was held on 25 November 2006.
- Carrying on the Fight: Women Candidates in Victorian Parliamentary Elections, Australian Women's Archives Project, 2008, http://www.womenaustralia.info/exhib/cws/home.html
- Trove: Dettman, Mary, http://nla.gov.au/nla.party-740076