List of Prime Ministers of Australia by time in office Rank by time in office Rank by time in office

| Rank_ | Prime_Minister_ | Party_ | Assumed_Office_ | Left_Office_ | TOTAL_Time_in_Office_ |
|---|---|---|---|---|---|
| 5. | Billy Hughes (1862–1952) | National Labor | 27 October 1915 | 9 February 1923 | 7years, 105days |
| 5. | Billy Hughes (1862–1952) | Nationalist | 27 October 1915 | 9 February 1923 | 7years, 105days |
| 6. | Joseph Lyons (1879–1939) | United Australia | 6 January 1932 | 7 April 1939 | 7years, 91days |
| 7. | Stanley Bruce (1883–1967) | Nationalist | 9 February 1923 | 22 October 1929 | 6years, 255days |
| 8. | Alfred Deakin (1856–1919) | Protectionist | 24 September 1903 | 27 April 1904 | 4 years, 313 days |
| 8. | Alfred Deakin (1856–1919) | Protectionist | 5 July 1905 | 13 November 1908 | 4 years, 313 days |
| 8. | Alfred Deakin (1856–1919) | Commonwealth Liberal | 2 June 1909 | 29 April 1910 | 4 years, 313 days |