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_ |
|---|---|---|---|---|---|---|
| 45. | QLD | Sir Thomas McIlwraith (1835–1900) KCMG | Conservatism | 22 January 1879 | 13 November 1883 | 5 years, 314 days |
| 45. | QLD | Sir Thomas McIlwraith (1835–1900) KCMG | Conservatism | 13 June 1888 | 30 November 1888 | 5 years, 314 days |
| 45. | QLD | Sir Thomas McIlwraith (1835–1900) KCMG | Ministerial | 27 March 1893 | 27 October 1893 | 5 years, 314 days |
| 46. | TAS | Sir John McPhee (1878–1952) KCMG | Nationalist Party of Australia | 15 June 1928 | 15 March 1934 | 5years, 273days |
| 47. | NSW | Sir William McKell (1891–1985) GCMG | Australian Labor Party | 16 May 1941 | 6 February 1947 | 5years, 266days |
| 48. | TAS | William Giblin (1840–1887) | No Party Alignment | 5 March 1878 | 20 December 1878 | 5 years, 215 days |