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Surname カズマサ (Kazumasa , カズマサ ) , globally, is a common family name. The surname カズマサ is characteristic of Japan, where it is quite a common surname, Hong Kong, where it is a rare surname, and Hungary. In absolute terms, it is commonest in Eastern Asia, particularly Japan, China, and Hong Kong. Much less frequently, カズマサ is the forename as well as the last name.