Note :
The Air Force in which the fallen were serving can be ascertained by examining their service numbers.
Royal Air Force – No prefix
Royal Canadian Air Force – Single letter prefix C, J or R
Royal Australian Air Force – Prefix AUS
Royal New Zealand Air Force – Prefix NZ
This follows RAF practice during the 1939-45 war.
O
| O’CONNELL | Geoffrey | 22 | 66500 | Flying Officer | 296 Squadron | 8 December 1942 |
| O’CONNOR | Eric Matthew Montague | 22 | AUS425202 | Flying Officer | 42 OTU | 30 March 1944 |
| O’DONNELL | James | 22 | 1371993 | Sergeant | 295 Squadron | 9 January 1943 |
| OGILVIE | Walter Henry | 20 | 3010933 | Flight Sergeant | 190 Squadron | 15 April 1945 |
| OKE | Ernest Cameron | 22 | J25965 | Flying Officer | 620 Squadron | 23 July 1944 |
| O’KEEFE | Geoffrey | 29 | 1399880 | Sergeant | 298 Squadron | 20 September 1944 |
| O’REILLY | Hugh | 23 | 1565631 | Sergeant | ORTU | 10 July 1944 |
| ORFORD | John | 19 | 1755424 | Sergeant | 196 Squadron | 4 November 1944 |
| ORMESHER | Geoffrey Percival | 22 | 152318 | Flight Lieutenant | 644 Squadron | 14 September 1945 |
| ORMISTON | Faulkner Adrian Andrew | 22 | AUS412827 | Warrant Officer | 42 OTU | 15 April 1944 |
| ORMSON | Francis | 21 | 1392310 | Flight Sergeant | 196 Squadron | 21 September 1944 |
| OSMOND-JONES | Graham Leslie | 25 | 1394086 | Flight Sergeant | 620 Squadron | 31 December 1944 |
| O’SULLIVAN | John Mortimer | 22 | 1412726 | Flight Sergeant | D Squadron Glider Pilot Regiment | 24 March 1945 |
| OTTWAY | Edwin Herbert | 26 | 143699 | Flying Officer | 295 Squadron | 21 July 1943 |