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_ |
|---|---|---|---|---|---|
| 27. | Barry O`Farrell | Liberal | 28 March 2011 | Incumbent | 2years, 310days |
| 28. | Alexander Mair | United Australia | 5 August 1939 | 16 May 1941 | 1year, 284days |
| 29. | Barrie Unsworth | Labor | 4 July 1986 | 25 March 1988 | 1year, 265days |
| 30. | Sir William Lyne | Protectionist | 14 September 1899 | 27 March 1901 | 1year, 194days |
| 31. | John Storey | Labor | 13 April 1920 | 5 October 1921 | 1year, 175days |
| 32. | Kristina Keneally | Labor | 4 December 2009 | 28 March 2011 | 1year, 114days |
| 33. | Nathan Rees | Labor | 5 September 2008 | 4 December 2009 | 1year, 90days |
| 34. | Thomas Lewis | Liberal | 3 January 1975 | 23 January 1976 | 1year, 20days |
| 35. | Jack Renshaw | Labor | 30 April 1964 | 13 May 1965 | 1year, 13days |