Across the world, Pietro Antonio (Pietro Antonio 
) is a rare masculine given name. The first name Pietro Antonio is habitual in Italy, where it is a rare masculine name, and Chile. Much less frequently, Pietro Antonio is the last name as well as the forename.
| VARIANT | COUNTRY |
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| Pietro Antonio | Germany, Chile, Ecuador, Italy, France |
Pedro Antonio, Pedro António, Pedro Antônio, Pier Antonio, and ペドロ
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pietro antonio solari Italian artist (1445-1493), IT (b. 1445) |
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| pietro antonio caracciolo IT (b. 1460) |
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| pietro antonio spinelli Italian Jesuit (1555-1615), IT (b. 1555) |
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| pietro antonio spinelli 1xth-century Roman Catholic bishop (b. 1597) |
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| pietro antonio tornamira Italian Benedictine monk and historian (1618-1681), IT (b. 1618) |
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| pietro antonio arnaldo Italian priest and theologian (1638-end of 17th century), FR (b. 1638) |
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| pietro antonio fiocco Italian composer, IT (b. 1654) |
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| pietro antonio pietrasanta Roman Catholic bishop (b. 1657) |
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| pietro antonio pini Roman Catholic bishop (1664-1736) (b. 1664) |
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pietro antonio lorenzoni Italian painter (1721-1782), IT (b. 1721) |
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pietro antonio zorzi Venetian Catholic cardinal, IT (b. 1745) |
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| pietro antonio zuccheri Roman Catholic bishop (b. 1697) |
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| pietro antonio craveri Roman Catholic bishop (1726-1801) (b. 1726) |
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| pietro antonio cirio Roman Catholic bishop (b. 1763) |
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| pietro antonio petrucci bishop of the Roman Catholic Church |
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Urso, Pecilli, Rizzuti, Rimedio, Lamaddalena, Iasella, Stellato, Scarpino, Carvutto, Cicalese, Battista, Peronaci, Polimeni, Ruggiero, Giuliani, Febbraro, Sgaramella, Caccavale, Scalise, Ballerino, Siscaro, Donati, Mazza, Amato, Dente, D'Ugo, Gallo, Lenti, Emili, Matera, Mazzei, Solari, Aiello, Carafa, Caruso, Cioffi, Boccia, Biondo, Peluso, Grassi, and Benincasa