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Worldwide, אירו (Eero , אירו) is quite a rare boy's first name. The given name אירו is characteristic of Northern Europe, particularly Finland, where it is quite a common male name, Estonia, where it is quite a rare masculine name, and Sweden, where it is a rare boy's name. Not in comparison with a country's population, it is the most numerous in Finland, the United States, and Estonia. Much less frequently, אירו is the last name as well as the forename.
אירו is also a name for the fictitious and mythical characters: Eero , the literary character from Aleksis Kivi's Seitsemän veljestä, The Seven Brothers and Eero Koskela .