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Surname アヤコ (Ayako , アヤコ ) , all over the world, is a widespread cognomen. The cognomen アヤコ is characteristic of Japan, where it is a common surname, Kenya, where it is quite a rare surname, and Myanmar, where it is a very rare surname. Measured by absolute frequency, it is the most numerous in Japan, Kenya, and China. Likewise, アヤコ is the forename as well as the last name.