| Honorific Prefix: | Lieutenant General |
| Raymond Fullerton Armstrong | |
| Birth Date: | 1917 12, df=yes |
| Birth Place: | Manchester, England[1] |
| Death Date: | 1990s |
| Allegiance: |  South Africa |
| Serviceyears: | 19361976 |
| Rank: | Lieutenant General |
| Servicenumber: | 01214089PE |
| Unit: | 2 Squadron SAAF |
| Commands: |
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| Battles: | |
| Spouse: | Dorothy Greenlees |
| Relations: | Maj Gen Bertram Armstrong (father) |
| Laterwork: | Director; Atlas Corporation |
Lieutenant General Raymond Fullarton Armstrong (14 December 1917[2] – early 1990s[3]) was a South African Air Force officer, who served as Chief of Defence Staff.[4]
He was born in Manchester when his father was seeing in the British Army during the Great War. Armstrong attended Rondebosch Boy's High School before attending the South African Military College.
He joined the Special Service Battalion in 1936 and soon thereafter joined the Permanent Force. He was trained as a pilot, serving in World War II and later in the Korean War.
He was Armed Forces attache in Washington. He served as Chief of Logistics Services until 1968 and Chief of Air Staff before being appointed acting Chief of Defence Staff from 1 March 1974 to 30 April 1974. He was confirmed in this appointment on 1 May 1974. He retired on 31 May 1976.
After retirement he served as a director of Atlas Aircraft Corporation.
He was awarded the following: