The Commissioner of Public Works was a member of Cabinet of the Government of South Australia.
Originally created for the Finniss Ministry on 24 October 1856, there were 63 holders of the public works portfolio.
The longest holder was Malcolm McIntosh, a member of the Liberal Federation/Liberal and Country League and a minister in the Butler and Playford governments, who held the portfolio on two separate occasions for a total of 23 years and 45 days.
The last holder was Kym Mayes, a member of the Labor Party and a minister in Lynn Arnold's government.
The title was abolished on 1 October 1992 (1992-10-01) and superseded by portfolio's for Infrastructure and Transport.