The Commanding Officers of 609 Squadron
| Date from | Name | Notes |
| 10 Feb 36 | Sqn Ldr Harald Peake | |
| 8 Dec 38 | Sqn Ldr Geoffrey H Ambler AFC | |
| 28 Dec 39 | Sqn Ldr M T Avent | |
| 28 Jun 40 | Sqn Ldr Horace S ‘George’ Darley DSO | |
| 4 Oct 40 | Sqn Ldr Michael L Robinson DSO DFC | KIA 10 Apr 42 |
| 29 Jul 41 | Sqn Ldr George K Gilroy DFC* | |
| 1 Jun 42 | Sqn Ldr Paul H M Richey DFC* | |
| 3 Oct 42 | Sqn Ldr Roland P Beamont DSO* DFC* | POW 12 Oct 44 |
| 5 May 43 | Sqn Ldr Alec Ingle DFC AFC | POW 11 Sep 43 |
| 18 Aug 43 | Sqn Ldr Patrick Thornton-Brown DFC | KIA 21 Dec 43 – shot down by USAAF P-47s |
| 29 Dec 43 | Sqn Ldr John C Wells DFC* | |
| 30 Jun 44 | Sqn Ldr Lodewijk E J M ‘Manu’ Geerts DFC | Ist Belgian OC |
| 14 Aug 44 | Sqn Ldr Raymond A Lallemant DFC* | 2nd Belgian OC |
| 17 Sep 44 | Sqn Ldr Thomas Y Wallace DFM | KIA 11 Nov 44 |
| 14 Nov 44 | Sqn Ldr Charles J G Demoulin DFC | 3rd Belgian OC |
| 6 Dec 44 | Sqn Ldr Eric R A Roberts DFC | POW 9 Mar 45 |
| 16 Mar 45 | Sqn Ldr Laurence W F ‘Pinkie’ Stark DFC* AFC | Sqn disbanded 15 Sep 45 |
| 10 May 46 | Sqn Ldr Patrick H Womersley DFC* | |
| Jan 50 | Sqn Ldr Arthur Hudson DFC AFC | |
| Dec 53 | Sqn Ldr Ernest ‘Tommy’ Evans | |
| Jan 56 | Sqn Ldr David Shaw | Sqn disbanded 7 March 57 |
| 1 Jul 98 | Air Defence Support Squadron (ADSS) Sqn Ldr R Walters-Morgan | The ADSS was awarded the 609 Sqn numberplate on 1 Oct 99 |
| Sep 99 | Sqn Ldr F P ‘Monty’ Smith | |
| Jan 01 | Sqn Ldr Brian Waite | |
| Feb 06 | Sqn Ldr Hilary Vincent-Philpot | |
| Nov 08 | Sqn Ldr Jeffrey W Metcalfe QVRM AE | |
| Feb 17 | Sqn Ldr Merv J Ashe MBE GCGI | |
| Jul 23 | Sqn Ldr Wayne Lovejoy | |
