| Malcolm Osler | |
| Birth Date: | 19 March 1919 |
| Birth Place: | Benoni, South Africa |
| Death Place: | Johannesburg, South Africa |
| Allegiance: | South Africa |
| Branch: | South African Air Force |
| Serviceyears: | 1939–1944 |
| Rank: | Lieutenant Colonel |
| Servicenumber: | IO2677V |
| Commands: | No. 601 Squadron RAF 6 Squadron SAAF 1 Squadron SAAF |
| Battles: | Second World War |
| Awards: | Distinguished Flying Cross & Bar |
Lieutenant Colonel Malcolm Stephen Osler, (19 March 1919 – 22 September 1971) was a South African flying ace of the Second World War, credited with 12 aerial victories.
Osler joined the South African Permanent Force in 1938 after attending a TATS pupil pilot training scheme. He joined 1 Squadron SAAF in June 1941 and assumed command of the squadron 6 months later.[1] He returned to South Africa and commanded 6 Squadron SAAF before attending a Military College Staff course. He served briefly as an instructor before joining 145 Squadron. On 29 April 1944 he was promoted to lieutenant colonel and awarded a Bar to his Distinguished Flying Cross.[2] He then took command of No. 601 Squadron RAF before serving with 1 MORU and 5 SAAF Wing before being demobilised.
Osler died suddenly on 22 September 1971.[1]