| Treasurer of South Australia | |
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| Department of Treasury and Finance | |
| Style | The Honourable |
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| Reports to | Premier of South Australia |
| Seat | State Administration Centre, 200 Victoria Square, Adelaide |
| Nominator | Premier of South Australia |
| Appointer | Governor of South Australia on the advice of the premier |
| Term length | At the Governor's pleasure |
| Formation | 24 October 1856 |
| First holder | Robert Torrens |
The Treasurer of South Australia is the Cabinet minister in the Government of South Australia who is responsible for the financial management of that state's budget sector. The Urban Renewal Authority, trading as Renewal SA, lies within the Treasurer's portfolio.
The current Treasurer is The Hon. Stephen Mullighan MHA, a member of the Australian Labor Party (South Australian Branch).