| Honorific Prefix: | Sir |
| Robert More-Molyneux | |
| Birth Date: | 7 August 1838 |
| Death Place: | Cairo, Egypt |
| Allegiance: |  United Kingdom |
| Serviceyears: | 1852–1903 |
| Rank: | Admiral |
| Commands: | HMS St Vincent HMS Ruby HMS Invincible Royal Naval College, Greenwich |
| Branch: | Royal Navy |
| Battles: | Crimean War Russo-Turkish War Anglo-Egyptian War |
| Awards: | Knight Grand Cross of the Order of the Bath |
Admiral Sir Robert Henry More-Molyneux, (7 August 1838 – 29 February 1904) was a Royal Navy officer who became President of the Royal Naval College, Greenwich.
After an education at Windlesham House School, More-Molyneux joined the Royal Navy in 1852 and served in the Black Sea during the Crimean War.[1] [2] He became Commanding Officer of the training ship HMS St Vincent in 1869, Commanding Officer of the corvette HMS Ruby in 1877 (in which he served during the Russo-Turkish War) and then Commanding Officer of the battleship HMS Invincible, flagship of Vice Admiral Sir Beauchamp Seymour, in 1880.[2]
After commanding the Invincible during the bombardment of Alexandria in 1882 during the Anglo-Egyptian War, he went on to be commodore commanding the ships in the Red Sea in 1884, captain-superintendent of Sheerness Dockyard in 1886 and admiral-superintendent at Devonport in 1891.[2] After that he became President of the Royal Naval College, Greenwich in 1900 before retiring in 1903.[2]
He was promoted to a Knight Grand Cross of the Order of the Bath (GCB) in the November 1902 Birthday Honours list,[3] and invested with the insignia by King Edward VII at Buckingham Palace on 18 December 1902.[4]
In 1874, he married Annie Mary Carew, daughter of Captain Matthew Charles Forster, R.N. ; she died in 1898, leaving a daughter, Gwendolen.