Matsura Seizan (松浦 静山), born Matsura Kiyoshi (松浦 清, March 7, 1760 – August 15, 1841), was a daimyō, essayist, and famed swordsman during the Edo period of Japan. Seizan was a practitioner of Iba Hideaki's Shingyōtō-ryū school of swordsmanship, in which Seizan was considered as an adept. Seizan adopted the name Joseishi after receiving the final transmission of the Shingyōtō ryu school.