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Cognomen ヨーコ (Yoko , Ono , ヨーコ ) , globally, is a common last name. The family name ヨーコ is characteristic of Indonesia, where it is quite a rare surname, Gabon, and Liberia. In absolute terms, it is commonest in Indonesia, Japan, and the Democratic Republic of the Congo. Also, ヨーコ is the forename as well as the last name.