Sir St. John Tyrwhitt | |
|---|---|
| Born | 18 April 1905 |
| Died | 10 October 1961 (aged 56) Queen Alexandra Military Hospital, London |
| Allegiance | United Kingdom |
| Service | Royal Navy |
| Years of service | 1919–1961 |
| Rank | Admiral |
| Commands | Second Sea Lord HMS Newcastle HMS Tartar HMS Juno HMS Defender |
| Battles / wars | Second World War Korean War |
| Awards | Knight Commander of the Order of the Bath Distinguished Service Order Distinguished Service Cross & Bar |
| Relations | Sir Reginald Tyrwhitt, 1st Baronet (father) Dame Mary Tyrwhitt (sister) |
Admiral Sir St. John Reginald Joseph Tyrwhitt, 2nd Baronet, KCB, DSO, DSC & Bar (18 April 1905 – 10 October 1961) was a senior Royal Navy officer who served as Second Sea Lord and Chief of Naval Personnel from 1959 to 1961.