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Cognomen Yoko (Yoko , Йоко , יוקו ) , in the entire world, is a common family name. The family name Yoko is characteristic of Sub-Saharan Africa, particularly Gabon, where it is quite a rare surname, Liberia, and the Democratic Republic of the Congo. In absolute terms, it is commonest in Indonesia, the Democratic Republic of the Congo, and Japan. Likewise, Yoko is the forename as well as the last name.