Henry Seymour MP, JP (10 November 1776 – 27 November 1849), of Knoyle House, East Knoyle, Wiltshire, of Trent, and of , was a British Tory politician. He was the only son of Henry Seymour, of Redland Court, Gloucestershire and his second wife, the Comtesse de Panthou. He was elected as a Member of Parliament (MP) for the borough of Taunton at the 1826 general election, having contested the borough unsuccessfully in 1820, and held the seat until he stood down at the 1830 general election. He was also a Justice of the Peace (JP).