Admiral of the Fleet Sir (George) Rodney Mundy, GCB (19 April 1805 – 23 December 1884) was a Royal Navy officer. As a commander, he persuaded the Dutch to surrender Antwerp during the Belgian Revolution and then acted as a mediator during negotiations between the Dutch and the Belgians to end hostilities. As a captain, he was deployed to the East Indies Station and was asked to keep the Sultan of Brunei in line until the British Government made a final decision on whether to take the island of Labuan: he took the Sultan's son-in-law, Pengiran Mumin, to witness the island's accession to the British Crown in December 1846. He was then deployed to the seas of Finland, where he secured Björkö Sound in operations against Russia during the Crimean War.
Mundy became Second-in-Command of the Mediterranean Fleet and, in May 1860, in the Expedition of the Thousand, was present in Palermo, Sicily when Giuseppe Garibaldi, the Italian general and politician, led his volunteers into the city. Mundy went on to be Commander-in-Chief, North America and West Indies Station and then Commander-in-Chief, Portsmouth.
Promoted to rear admiral on 30 July 1857, Mundy became Second-in-Command of the Mediterranean Fleet, with his flag in the second-rate HMS Hannibal in April 1859. He was appointed a Companion of the Order of the Bath on 23 June 1859. In May 1860, in the Expedition of the Thousand, he was involved in evacuating local citizens from the conflict. Garibaldi went on to depose Francis II, the tyrannical ruler of the Kingdom of the Two Sicilies in March 1861, and to achieve Italian unification. Garibaldi credited Mundy with bringing about the armistice between the warring parties and offered him his heartfelt gratitude "in the name of Palermo, of Sicily, of entire Italy."
Mundy went on to be Commander of detached squadron on the Syrian coast in 1861 and, having been advanced to Knight Commander of the Order of the Bath on 10 November 1862, he was promoted to vice-admiral on 15 December 1863. He then became Commander in-Chief, North America and West Indies Station, with his flag in the broadside ironclad HMS Royal Alfred, in January 1867. Promoted to full admiral on 26 May 1869, he became Commander-in-Chief, Portsmouth in March 1872 and retired in April 1875.
Mundy was advanced to Knight Grand Cross of the Order of the Bath on 2 June 1877 and, having been promoted to Admiral of the Fleet on 27 December 1877, he died at his home in Chesterfield Street, London on 23 December 1884.