Vice-Admiral George Henry Seymour, CB (20 March 1818 – 25 July 1869) was a Royal Navy officer who served as Third Naval Lord from 1866 to 1868.

Francis Seymour, 5th Marquess of Hertford, was his elder brother.

He joined the Royal Navy in 1831 and, having been promoted to captain in 1844, was given command of HMS Carysfort in 1845.

[1] Promoted to rear admiral in 1863, Seymour served as a Third Naval Lord between 1866 and 1868.

[2] Seymour married Sophia Margaret, daughter of Derick Hoste, in 1861.