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