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Last name Katsuki (カツキ , Katsuki , Кацуки ) , globally, is quite a common cognomen. The last name Katsuki is habitual in Japan, where it is quite a rare surname, Brazil, where it is a very rare surname, and Australia. Not in comparison with a country's population, it is commonest in Japan, Brazil, and Indonesia. Likewise, Katsuki is the forename as well as the last name.