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Throughout the world, Zio (Tio , Zio , زيو ) is a common dominantly masculine, but infrequently girly first name. The first name Zio is habitual in Indonesia, where it is quite a common gender-neutral name, Nigeria, where it is quite a rare masculine name, and Jamaica, where it is a rare masculine name. Measured by absolute frequency, it is commonest in Indonesia, Nigeria, and Italy. Also, Zio is the last name as well as the forename.
Zio is also a name for the fictitious and mythical characters: Tio Pep ; Tio de la Porra ; Tio Holtzman ; Tio Barnabé and Tio Mut , the character in Matèria de Bretanya, among other works.