| John Clark | |
| Office: | Member of the South Australian House of Assembly |
| Term Start: | 19 April 1952 |
| Term End: | 9 March 1973 |
| Predecessor: | Leslie Duncan |
| Successor: | Peter Duncan |
| Birth Name: | John Clark |
| Birth Date: | 1907 5, df=yes |
| Birth Place: | Adelaide, South Australia |
| Party: | Australian Labor Party |
John Stephen Clark (14 May 1907 – 21 November 1984) was an Australian politician who represented the South Australian House of Assembly seats of Gawler and Elizabeth from 1952 to 1970 and from 1970 to 1973 for the Labor Party.[1]