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Family name あつこ (Atsuko , あつこ) , globally, is a rare surname. The last name あつこ is habitual in Mongolia, where it is quite a rare surname, Japan, where it is a rare surname, and Malaysia. Not in comparison with a country's population, it most frequently occurs in Japan, China, and Indonesia. Much more prevalently, あつこ is the forename as well as the last name.