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In the entire world, سيريو (Sirio , Serio , Sejro ) is quite a common male first name. The forename سيريو is habitual in Italy, where it is quite a rare boy's name, Philippines, where it is a rare male name, and Argentina. Not in comparison with a country's population, it is commonest in Italy, Philippines, and Brazil. Likewise, سيريو is the last name as well as the forename.
سيريو is also a name for the fictitious and mythical characters: Dragon Shiryū , the fictional character from Saint Seiya.