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Cognomen ジュンコ (Junko , ジュンコ ) , throughout the world, is a widespread last name. The cognomen ジュンコ is characteristic of Japan, where it is a common surname, Taiwan, where it is a rare surname, and Poland. Not in comparison with a country's population, it is commonest in Eastern Asia, particularly Japan, China, and Taiwan. Very seldom, ジュンコ is the forename as well as the last name.