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Surname Казуо (Kazuo , Казуо ) , all around the world, is a common last name. The family name Казуо is habitual in Japan, where it is quite a rare surname, Taiwan, where it is a rare surname, and Malaysia. Measured by absolute frequency, the name is most common in Japan, China, and Indonesia. Very seldom, Казуо is the forename as well as the last name.