Jacques-Philippe Mérigon de Montgéry (25 July 1781 – 9 September 1839) was a French naval officer and military technologist.
He was involved in innovating naval weaponry and defences including anti-ship mines, torpedoes, iron cladding, and rockets.
As a member of the Conseil des Travaux de la Marine from 1830, he examined various weapons including flamethrowers, rocket firing mechanisms, ironclad steam ships, mines, submarines, and torpedoes.
He wrote a biography of Robert Fulton and examined the works of Hero of Alexandria, the development of cannons, and whaling equipment.
He was an official correspondent of the Annales de l’industrie, a member of the American Philosophical Society, Philadelphia and the Imperial Academy of Sciences, Moscow.