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Cognomen ヒサコ (Hisako , ヒサコ ) , throughout the world, is a common family name. The cognomen ヒサコ is characteristic of Japan, where it is quite a common surname, Spain, where it is a very rare surname, and Indonesia. Measured by absolute frequency, it most frequently occurs in Japan, China, and Indonesia. More prevalently, ヒサコ is the forename as well as the last name.