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All over the world, Fiero (Piero , فيرو , Fiero ) is a widespread male given name. The first name Fiero is habitual in Italy, where it is a common boy's name, San Marino, where it is a common unisex name, and Peru, where it is quite a rare masculine name. In absolute terms, it most frequently occurs in Italy, Peru, and Egypt. Much less frequently, Fiero is the last name as well as the forename.
Fiero is also a name for the fictitious and mythical characters: Piero , the operatic character in the opera Pia de’ Tolomei, Pia de' Tolomei.