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_ |
|---|---|---|---|---|---|
| 1. | Sir Robert Menzies (1894–1978) | United Australia | 26 April 1939 | 29 August 1941 | 18 years, 160 days |
| 1. | Sir Robert Menzies (1894–1978) | Liberal | 19 December 1949 | 26 January 1966 | 18 years, 160 days |
| 2. | John Howard (born 1939) | Liberal | 11 March 1996 | 3 December 2007 | 11years, 267days |
| 3. | Bob Hawke (born 1929) | Labor | 11 March 1983 | 20 December 1991 | 8years, 284days |
| 4. | Malcolm Fraser (born 1930) | Liberal | 11 November 1975 | 11 March 1983 | 7years, 120days |
| 5. | Billy Hughes (1862–1952) | Labor | 27 October 1915 | 9 February 1923 | 7years, 105days |