Mitsuo (written: , , , , , , , , , or in hiragana) is a masculine Japanese given name. Notable people with the name include:
*Mitsuo Aoki (1914–2010), American theologian
*, Japanese naval aviator
*Mitsuo Fujikura, Japanese mixed martial artist
*, Japanese anime director
*Mitsuo Harada (born 1964), Japanese golfer
*, Japanese anime director
*, Japanese manga artist
*, Japanese cross-country skier
*, Japanese politician
*, Japanese sport wrestler
*, Japanese animator and anime director
*, Japanese motorcycle racer
*, Japanese voice actor
*, Japanese archaeologist and academic
*, Japanese footballer and manager
*, Japanese footballer
*, Japanese activist
*, Japanese politician
*, Japanese professional wrestler
*, pen-name of Koba Ichiro, Japanese writer
*, Japanese sprint canoeist
*, Japanese footballer
*, Japanese sport shooter
*, Japanese voice actor
*, Japanese art, film and music director
*, Japanese physicist
*, Japanese baseball player
*, Tsunku (:ja:つんく♂)'s real name, a prolific Japanese record producer, songwriter, and vocalist
*, Japanese artistic gymnast
*, Japanese footballer
*, Japanese footballer
*, Japanese sport shooter
*, Japanese screenwriter and film director
*, Japanese baseball player
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Japanese masculine given names
Masculine given names