List of Australian heads of government by time in office Historical premiers Historical premiers

| Rank_ | State_ | Premier_ | Party_ | Assumed_office_ | Left_office_ | TOTAL_Time_in_office_ |
|---|---|---|---|---|---|---|
| 11. | QLD | William Forgan Smith (1897–1953) | Australian Labor Party | 17 June 1932 | 16 September 1942 | 10years, 91days |
| 12. | NSW | Neville Wran (1926– ) AC , CNZM , QC | Australian Labor Party | 14 May 1976 | 4 July 1986 | 10years, 51days |
| 13. | WA | Sir John Forrest (1847–1918) GCMG | No Party Alignment | 29 December 1890 | 15 February 1901 | 10years, 48days |
| 14. | SA | John Bannon (1943– ) AO | Australian Labor Party | 10 November 1982 | 4 September 1992 | 9years, 299days |
| 15. | NSW | Sir Robert Askin (1907–1981) GCMG | Liberal Party of Australia | 13 May 1965 | 3 January 1975 | 9years, 235days |
| 16. | SA | Mike Rann (1953– ) CNZM RP | Australian Labor Party | 5 March 2002 | 21 October 2011 | 9years, 230days |