| Name | ODDY, Clifford 'Cliff' |
| Number | 1218157 |
| Rank | Flight Sergeant |
| Nationality | British |
| Born | Leeds, Yorkshire, 2 August 1922 |
| Arrived | 8 June 1944 |
| Departed | 17 July 1944 |
| Notes | KIFA in mid-air collision with Flt. Sgt. R. Short at Lympne, 17 July 1944, aged 21; son of Clifford & Catherine Oddy of Armley, Leeds, & husband of Elsie Oddy of Headingley, Leeds; buried in Armley Cemetery, Leeds, Yorkshire, Section G, Grave 1219 |
| Name | O'NEILL, Desmond Hugh |
| Number | 40638 |
| Rank | Flying Officer |
| Nationality | Irish |
| Born | Unknown |
| Arrived | 29 September 1940 |
| Departed | 11 October 1940 |
| Notes | KIFA in mid-air collision with Sgt. Plt L. R. Carter, baled out but parachute failed, 11 October 1940, aged 25; son of Lt.-Col. Edward M. M. & Ethel M. O'Neill of Glasnevin, Dublin, Ireland, & husband of Muriel O'Neill; buried in Streatham Park Cemetery, Surrey, Square 7A, Grave 12104 |
| Name | OVERALL, Horace Ernest Herbert 'Pookie' |
| Number | 39331 |
| Rank | Flying Officer |
| Nationality | Canadian |
| Born | Canada, 1913 |
| Arrived | 7 August 1937 |
| Departed | 6 November 1939 |
| Notes | KIFA 6 November 1939, aged 26; son of William J. & Annie S. Overall of Niagara Falls, Ont., Canada; buried in Catterick Cemetery, Yorks., Church of England Section, Row M, Grave 4 |
| Name | OXENHAM, Russel Edwin George |
| Number | 1317677 |
| Rank | Sergeant Pilot |
| Nationality | British |
| Born | Unknown, ca. 1922 |
| Arrived | ca. 26 August 1942 (first mentioned on this date) |
| Departed | 24 September 1942 |
| Notes | KIFA during air-to-ground firing off Newcastle, Northern Ireland, 24 September 1942, aged 20; son of Edwin G. & Olive I. Oxenham of Mutley, Plymouth; buried in Plymouth Efford Cemetery, Devon, Section C, General Grave 9740 |
| Name | OXSPRING, Robert Wardlow |
| Number | 40743 |
| Rank | Flight Lieutenant |
| Nationality | British |
| Born | Sheffield, Yorkshire, 22 May 1919 |
| Arrived | ca. 13 October 1941 |
| Departed | 28 December 1941 |
| Decorations | DFC (1940), 1st Bar to DFC (1942), 2nd Bar to DFC (1943), Dutch Flying Cross (1947), AFC (1949) |
| Notes | Retired February 1968, retaining Wing Commander |