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Cognomen Kazuyuki (Kazuyuki , カズユキ , 和之 , among others...) , in the entire world, is a common last name. The family name Kazuyuki is characteristic of Japan, where it is quite a common surname, Singapore, where it is a rare surname, and Sweden. Measured by absolute frequency, it is the most numerous in Japan, China, and Singapore. Very seldom, Kazuyuki is the forename as well as the last name.