In all the world, Pierino (Pierino 
, ピエロ 
) is a common masculine first name. The first name Pierino is characteristic of Italy, where it is quite a common male name, Uruguay, where it is quite a rare male name, and Argentina, where it is a rare male name. Not in comparison with a country's population, it is commonest in Italy, Argentina, and Germany. Much less frequently, Pierino is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Pierino | Germany, Italy, Brazil, United States, Argentina |
| ピエロ | Japan |
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pierino da vinci Italian sculptor (1530-1553), IT (b. 1530) |
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| pierino belli 16th-century Italian soldier and jurist, an authority on the law of war who is considered an authority and one of the founders of modern international law, IT (b. 1502) |
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| pierino perona author (1801-2000) (b. 1801) |
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| pierino morlacchi (b. 1808) |
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pierino rovida Italian association football player (1898-1968), IT (b. 1898) |
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pierino gabetti Italian weightlifter (1904-1971), IT (b. 1904) |
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pierino ambrosoli (1905-1975), CH (b. 1905) |
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pierino bertolazzo Italian bicycle racer (1906-1964), IT (b. 1906) |
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pierino favalli cyclist (1914-1986), IT (b. 1914) |
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| pierino negrotto cambiaso Italian politician and mayor, IT (b. 1867) |
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pierino sam Italian sculptor and painter (1921-2010), IT (b. 1921) |
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pierino baffi road bicycle racer, IT (b. 1930) |
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| pierino albini Italian bicycle racer, IT (b. 1885) |
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| pierino tatti Swiss politician (1893-1963), CH (b. 1893) |
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| pierino piacco Italian cyclist, IT (b. 1895) |
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Aimo, Rossini, Rinaldi, Ruggeri, De Luca, Lapeste, Luciani, Ferrari, Ferraro, Castelli, Cattaneo, Barbieri, Branella, La Peste, Lombardi, Esposito, Marchetti, Sacchetti, Di Pietro, Valentini, Fumagalli, Martinelli, Pierini, Profeta, Bianchi, Belsito, Pini, Serra, Conti, Bravi, Bruno, Pozzi, Rossi, Ricci, Russo, Gallo, Masciarelli, Greco, Marini, Romano, Vitali, Martini, Mancini, Moretti, Santoro, Stucchi, Colombo, Cirulli, Villa, and Marchisello