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Family name Yoshiaki (良明 , Yoshiaki , ヨシアキ ) , across the world, is a common last name. The last name Yoshiaki is characteristic of Japan, where it is quite a common surname, Singapore, where it is a rare surname, and Taiwan. Measured by absolute frequency, it most frequently occurs in Eastern Asia, particularly Japan, China, and Taiwan. Likewise, Yoshiaki is the forename as well as the last name.