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Cognomen ヨシアキ (Yoshiaki , ヨシアキ , Yosiaki ) , around the globe, is a common last name. The surname ヨシアキ is habitual in Japan, where it is quite a common surname, Singapore, where it is a rare surname, and Taiwan. In absolute terms, the name is most common in Eastern Asia, particularly Japan, China, and Taiwan. Very seldom, ヨシアキ is the forename as well as the last name.