| 1 | SPAIN, William | Nil | Inspector General of Police | 1 January 1851 | 31 December 1851 ( Resigned ) | 364 days |
| 2 | MAYNE, Captain William Colbourne | Nil | Inspector General of Police | 1 January 1852 | 17 September 1856 | 4 years, 260 days |
| 3 | McLERIE, Captain John | Nil | Inspector General of Police | 28 October 1856 | 6 October 1874 ( Death ) | 17 years, 343 days |
| 4 | FOSBERY, Edmund Walcott | Nil | Inspector General of Police | 7 October 1874 | 30 June 1904 | 29 years, 267 days |
| 5 | GARVIN, Thomas | 'Q' 1012 | Inspector General of Police | 1 July 1904 | 31 December 1910 | 6 years, 183 days |
| 6 | DAY, Ernest Charles | 'Q' 4473 | Inspector General of Police | 1 January 1911 | 9 January 1915 | 4 years, 8 days |
| 7 | MITCHELL, James | 'Q' 4795 | Inspector General of Police | 1 January 1915 | 8 January 1926 | 15 years, 78 days |
| 7A | MITCHELL, James | | Commissioner of Police | 9 January 1926 | 20 March 1930 | |
| 8 | CHILDS, Walter Henry | 'Q' 6328 | Commissioner of Police | 21 March 1930 | 23 March 1935 | 5 years, 2 days |
| 9 | MacKAY, William John | 'Q' 9113 | Commissioner of Police | 24 March 1935 | 22 January 1948 | 12 years, 304 days |
| 10 | SCOTT, James Frederick | 'Q' 9264 | Commissioner of Police | 18 February 1948 | 13 October 1952 | 4 years, 238 days |
| 11 | DELANEY, Colin John | 00574 | Commissioner of Police | 14 October 1952 | 27 February 1962 | 9 years, 136 days |
| 12 | ALLAN, Norman Thomas William | 03333 | Commissioner of Police | 28 February 1962 | 14 November 1972 | 10 years, 260 days |
| 13 | HANSON, Frederick John | 03958 | Commissioner of Police | 15 November 1972 | 31 December 1976 | 4 years, 46 days |
| 14 | WOOD, Mervyn Thomas | 04169 | Commissioner of Police | 1 January 1977 | 5 June 1979 | 2 years, 155 days |
| 15 | LEES, James Travers | 04529 | Commissioner of Police | 17 October 1979 | 29 December 1981 | 2 years, 73 days |
| 16 | ABBOTT, Cecil Roy | 04668 | Commissioner of Police | 30 December 1981 | 7 August 1984 | 2 years, 221 days |
| 17 | AVERY, John Keith | 06028 | Commissioner of Police | 7 August 1984 | 12 March 1991 | 6 years, 217 days |
| 18 | LAUER, Anthony Raymond | 08019 | Commissioner of Police | 31 March 1991 | 19 September 1996 | 5 years, 190 days |
| 18A | TAYLOR, Neil Owen ( Acting ) | 09204 | Acting Commissioner of Police | 20 February 1996 | 29 August 1996 | 191 days |
| 19 | RYAN, Peter | Nil. Appointed from England Constabulary | Commissioner of Police | 30 August 1996 | 17 April 2002 | 5 years, 230 days |
| 20 | MORONEY, Kenneth Edward | 14414 | Commissioner of Police | 18 April 2002 | 31 August 2007 | 5 years, 135 days |
| 21 | SCIPIONE, Andrew Phillip | 19214 | Commissioner of Police | 31 August 2007 | 31 March 2017 | 9 years, 212 days |
| 22 | FULLER, Michael John | 24552 | Commissioner of Police | 31 March 2017 | 31 January 2022 | 4 years, 306 days |
| 23 | WEBB, Karen | 23998 | Commissioner of Police | 1 February 2022 | 6 June 2025 | 3 years, 125 days |
| 23A | THURTELL, Peter ( Acting ) | 22192 | Acting Commissioner of Police | 9 June 2025 | 30 September 2025 | 113 days |
| 24 | LANYON, Mal | 23420 | Commissioner of Police | 1 October 2025 | | |
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