Surname Митсуо (Mitsuo 
, Митсуо 
) , all over the world, is quite a common family name. The last name Митсуо is habitual in Japan, where it is quite a rare surname, Hong Kong, where it is a rare surname, and Malaysia. Measured by absolute frequency, the name is most common in Japan, China, and Indonesia. Also, Митсуо is the forename as well as the last name.