| Sir John Westall | |
| Birth Date: | 2 July 1901[1] |
| Birth Place: | Napier, New Zealand |
| Death Date: | [2] |
| Death Place: | Christchurch, New Zealand |
| Allegiance: | United Kingdom |
| Branch: | Royal Marines |
| Serviceyears: | 1919–1955 |
| Rank: | General |
| Commands: | Commandant General Royal Marines Infantry Training Centre, Royal Marines |
| Battles: | Second World War |
| Awards: | Knight Commander of the Order of the Bath Commander of the Order of the British Empire |
General Sir John Chaddesley Westall, (2 July 1901 – 30 September 1986) was a New Zealand Royal Marines officer who served as Commandant General Royal Marines from 1952 to 1955.
Born in Napier, New Zealand,[3] Westall joined the Royal Marines in 1919.[4] He served in the Second World War as a Staff Officer in intelligence activities in Singapore and Malaya from 1939 and as a Staff Officer in intelligence activities in India and Burma from 1942, before becoming a Staff Officer at the Director of Naval Intelligence Department in the Admiralty in 1944.[4]
After the war he became commander of the Infantry Training Centre, Royal Marines and then a Staff Officer in intelligence activities in Cape Town from 1947.[4] He was appointed Chief Staff Officer at Plymouth in 1948, commander of the Royal Marine Barracks at Plymouth in 1949 and commander of the Royal Marine Barracks at Deal in 1950.[4] He went on to be chief of staff to the Commandant General Royal Marines in 1951, and Commandant General Royal Marines in 1952 before retiring in 1955.[4]