Admiral Sir Geoffrey Nigel Oliver GBE, KCB, DSO & Two Bars (22 January 1898 – 26 May 1980) was a Royal Navy officer during the Second World War.

In October 1918 he was promoted again, to lieutenant following technical courses in which he performed brilliantly, obtaining First Class certificates in all five subjects, and receiving the Goodenough Medal and prize as the best gunnery student in his year.

The ship rammed the Italian 600-Serie Adua-class submarine Tembien near Tunis on 2 July 1941, for which Oliver was awarded a Distinguished Service Order (DSO) in November.

In 1942 the ship was part of the force which captured the Vichy French island of Madagascar after which it was assigned to Admiral Sir Henry Harwood's Eastern Mediterranean fleet.

On 15 June, Operation Vigorous was abandoned because of the strength of the air attacks, the depletion of ammunition and fuel caused by them and the nearby presence of the Italian Fleet.

The convoy turned away from Malta and headed back towards Alexandria, but early the following morning Hermione was torpedoed and sunk by U-205 south of Crete with the loss of 87 crew out of 570.

Oliver survived the sinking and served as naval liaison officer to the Nile Delta Army for the next few months, until October 1942 when he was promoted to Commodore 2nd Class and assigned in Gibraltar to organise shipping for Operation Torch, the invasion of French North Africa.

From October 1944 until February 1945 he was in command of the First Aircraft Carrier Squadron on HMS Royalist, part of the Eastern Fleet, clearing mines in the Aegean Sea and providing humanitarian relief.

He was promoted to rear admiral in May 1945 when the force was attached to the Eastern Fleet's 21st Aircraft Carrier Squadron[1] where it took part in the amphibious landing at Rangoon.