Sir George Hamilton Seymour GCB GCH PC (21 September 1797 – 2 February 1880) was a British diplomat.

Seymour was the son of Lord George Seymour and his wife Isabella, daughter of Rev. George Hamilton. In 1831 he married Gertrude, daughter of Henry Trevor (who later became General Lord Dacre); they had seven children (including the cricketer Alfred Seymour). His daughter, Augusta Emily Seymour, married Hugh Cholmondeley, 2nd Baron Delamere of Vale Royal (b. 3 Oct 1811, d. 1 Aug 1887).^[1] He died in February 1880, aged 82.^[2]