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Cognomen Kuwana (Kuwana ) , worldwide, is quite a rare last name. The cognomen Kuwana is characteristic of Zimbabwe, where it is quite a rare surname, Hungary, where it is a rare surname, and South Africa, where it is a very rare surname. In absolute terms, the name is most common in Zimbabwe, Brazil, and the United States. Much less frequently, Kuwana is the forename as well as the last name.