Seishirō, Seishiro or Seishirou (written: , , , , or ) is a masculine Japanese given name. Notable people with the name include:
, Japanese aikidoka , Japanese politician , Japanese general , Japanese child actor , Japanese actor , Japanese American jujutsuka , Japanese baseball player , Japanese footballer
Fictional characters , a character in the manga series Blue Lock , a character in the manga series Tokyo Babylon , a character in the manga series Tsubasa ~RESERVoir CHRoNiCLE~