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Surname ダイゴ (ダイゴ , Daigo ) , throughout the world, is a common cognomen. The cognomen ダイゴ is habitual in Japan, where it is quite a rare surname, Philippines, where it is a rare surname, and Hong Kong. In absolute terms, this name is the most popular in Japan, Philippines, and China. Very seldom, ダイゴ is the forename as well as the last name.