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Cognomen Iso (Iso , イソ , Исо ) , in the entire world, is quite a common family name. The last name Iso is characteristic of North Macedonia, where it is quite a common surname, Philippines, where it is quite a rare surname, and Algeria, where it is a rare surname. In absolute terms, it most frequently occurs in Philippines, Nigeria, and Indonesia. Likewise, Iso is the forename as well as the last name.