Keizō, Keizo or Keizou (written: , , , , , or ) is a masculine Japanese given name which can refer to:
, pseudonym Gakken, Japanese dermatologist and urologist Keizo Fukuda (born 1974), Japanese musician, member of Hifana , Japanese triple jumper , Japanese civil servant and general officer , Japanese author , Japanese footballer , Japanese actor , Japanese photographer , Imperial Japanese Navy admiral , Japanese animation director , Japanese skier , Japanese singer-songwriter and composer , Japanese politician and Prime Minister of Japan , Japanese Go player , Japanese politician , Japanese long-distance runner