Rear-Admiral Sir Henry Hart KCH (1 May 1781 – 22 December 1856) was a British naval officer and diplomat of the eighteenth and nineteenth centuries. After a brief stint in the East India Company he joined the Royal Navy in 1796 on Sir Edward Pellew's frigate HMS Indefatigable, participating in the action of 13 January 1797 before following Pellew to the ship of the line HMS Impetueux where he experienced a mutiny before taking part in a number of cutting out expeditions and the Ferrol Expedition. At the Peace of Amiens Hart transferred to the ship of the line HMS Foudroyant in the Mediterranean Sea where he was promoted to lieutenant and joined Sir John Gore's frigate HMS Medusa, in which he participated in the action of 5 October 1804 before sailing to India in 1805. There he was reunited