Vice-Admiral Lord Hugh Seymour (29 April 1759 – 11 September 1801) was a senior British Royal Navy officer of the late 18th century who was the fifth son of Francis Seymour-Conway, 1st Marquess of Hertford and became known for being both a prominent society figure and a highly competent naval officer. He served during the American Revolutionary and French Revolutionary Wars and later in his career performed a period of shore duty on the Admiralty board.