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Surname カツミ (Katsumi , カツミ , Katumi ) , in all the world, is a common last name. The cognomen カツミ is habitual in Japan, where it is quite a common surname, Ghana, where it is a rare surname, and Nigeria. Not in comparison with a country's population, the name is most common in Japan, China, and Nigeria. Also, カツミ is the forename as well as the last name.