| John Grant | |
| Birth Date: | 13 October 1908 |
| Allegiance: |  United Kingdom |
| Serviceyears: | 1926–1960 |
| Rank: | Rear Admiral |
| Branch: | Royal Navy |
| Commands: | HMS Beverley HMS Philante HMS Opportune HMS Fame HMS Crispin HMS Cleopatra HMS Vernon Reserve Fleet |
| Battles: | World War II |
| Awards: | Companion of the Order of the Bath Distinguished Service Order |
Rear-Admiral John Grant (13 October 1908 – 28 February 1996) was a senior Royal Navy officer who commanded the Reserve Fleet.
Grant joined the Royal Navy as a midshipman in the battleship in 1926.[1] He specialised in anti-submarine warfare and saw service in the Atlantic, Arctic and Mediterranean during World War II.[1] He became staff officer for convoys at Rosyth in 1940 and then commanded the destroyer HMS Beverley from 1941 before being posted to the anti-submarine warfare training school, HMS Osprey, in a training role from 1942.[1] He briefly commanded the yacht HMS Philante in 1943[1] and then became Assistant Staff Officer for Operations at Headquarters Western Approaches later that year.[2]
After the War he commanded the destroyer HMS Opportune, the destroyer HMS Fame and then the destroyer HMS Crispin.[1] After attending the Joint Services Staff College in 1947 he became executive officer at the torpedo school HMS Vernon in 1948 and deputy director of Torpedo at the Anti-Submarine and Mine Warfare Division of the Admiralty in 1949.[1] He went on to be commanding officer of the cruiser HMS Cleopatra in 1952 and after attending Imperial Defence College in 1954, became Commander of HMS Vernon in 1955.[1] He joined the staff of the Chief of the Defence Staff at the Ministry of Defence in 1957. Promoted to rear-admiral on 7 January 1959, he became Flag Officer commanding the Reserve Fleet in 1959 before retiring in 1960.[1]