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Worldwide, Serio (Serio , Sarius , سيريو ) is quite a rare principally male, but scarcely female first name. The given name Serio is habitual in Philippines, where it is a rare boy's name, Italy, where it is a rare dominantly masculine, but infrequently girly name, and Spain, where it is a very rare masculine name. Measured by absolute frequency, the name is most common in Philippines, Italy, and Indonesia. More prevalently, Serio is the last name as well as the forename.