Seikichi (written: 清吉 or 政吉) is a masculine Japanese given name. Notable people with the name include:
*
Seikichi Odo (1926–2002), Japanese karateka
* (1917–1998), Japanese karateka
Fictional characters:
* character in the stage play and anime series ''Oh! Edo Rocket''
*Seikichi Tamaya is an antagonist in
Hidamari no Ki
{{given name
Japanese masculine given names