List of Premiers of New South Wales by time in office Rank by time in office Rank by time in office

| Rank_ | Premier_ | Party_ | Assumed_Office_ | Left_Office_ | TOTAL_Time_in_Office_ |
|---|---|---|---|---|---|
| 7. | Sir Charles Cowper | Liberalism | 13 January 1870 | 15 December 1870 | 6 years, 352 days |
| 8. | William Holman | Labor | 30 June 1913 | 15 November 1916 | 6years, 287days |
| 8. | William Holman | Nationalist | 15 November 1916 | 12 April 1920 | 6years, 287days |
| 9. | Sir William McKell | Labor | 16 May 1941 | 6 February 1947 | 5years, 266days |
| 10. | Sir James Martin | No Party Alignment | 16 October 1863 | 2 February 1865 | 5 years, 171 days |
| 10. | Sir James Martin | No Party Alignment | 22 January 1866 | 26 October 1868 | 5 years, 171 days |
| 10. | Sir James Martin | No Party Alignment | 16 December 1870 | 13 May 1872 | 5 years, 171 days |
| 11. | James McGirr | Labor | 6 February 1947 | 2 April 1952 | 5years, 56days |