Seizō, Seizo, Seizou or Seizoh (written: 精三, 省三 or せいぞう in hiragana) is a masculine Japanese given name. Notable people with the name include:
, Japanese actor , Japanese voice actor , Imperial Japanese Navy admiral and Governor-General of Taiwan , Imperial Japanese Navy admiral , Japanese horticulturist , Japanese politician , Japanese manga artist and illustrator , Japanese student who joined the Imperial Japanese Navy