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_ |
|---|---|---|---|---|---|---|
| 19. | VIC | Sir James McCulloch (1819–1893) KCMG | No Party Alignment | 9 April 1870 | 19 June 1871 | 9 years, 118 days |
| 19. | VIC | Sir James McCulloch (1819–1893) KCMG | No Party Alignment | 20 October 1875 | 21 May 1877 | 9 years, 118 days |
| 20. | QLD | Peter Beattie (1952– ) AC | Australian Labor Party | 20 June 1998 | 13 September 2007 | 9years, 85days |
| 21. | WA | John Willcock (1879–1956) | Australian Labor Party | 20 August 1936 | 31 July 1945 | 8years, 345days |
| 22. | VIC | Sir Rupert Hamer (1916–2004) KCMG AC ED | Liberal Party of Australia | 23 August 1972 | 5 June 1981 | 8years, 286days |
| 23. | SA | Sir Richard Butler (1885–1966) KCMG | Liberal & Country League | 8 April 1927 | 17 April 1930 | 8 years, 210 days |