List of Australian Prime Ministers by age List of officeholders List of officeholders

| _ | Prime_Minister | Date_of_birth | Start_date_of_first_term | Age_at_beginning_of_first_term | End_date_of_final_term | Total_time_in_office | Date_of_death | Lifespan_ |
|---|---|---|---|---|---|---|---|---|
| 4 | George Reid | 25 February 1845 | 18 August 1904 | 59 years, 175 days | 5 July 1905 | 321 days | 12 September 1918 | 26,861 days (73 years, 199 days) |
| 5 | Andrew Fisher | 29 August 1862 | 13 November 1908 | 46 years, 76 days | 27 October 1915 | 1,758 days | 22 October 1928 | 24,160 days (66 years, 54 days) |
| 6 | Joseph Cook | 7 December 1860 | 24 June 1913 | 52 years, 199 days | 17 September 1914 | 450 days | 30 July 1947 | 31,645 days (86 years, 235 days) |
| 7 | Billy Hughes | 25 September 1862 | 27 October 1915 | 53 years, 32 days | 9 February 1923 | 2,662 days | 28 October 1952 | 32,905 days (90 years, 33 days) |