Last name Petrillo (Petrillo 
) , in the world, is a common surname. The surname Petrillo is characteristic of Italy, where it is quite a common surname, Argentina, where it is quite a rare surname, and Switzerland. Not in comparison with a country's population, it most frequently occurs in Italy, the United States, and Argentina. Much less frequently, Petrillo is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Petrillo | Brazil, Italy, Switzerland, United States, Argentina |
Depetrillo, Pétrillo, and Петрілло
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alfredo petrillo politician (1872-1943), IT (b. 1872) |
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sammy petrillo American comedian (1934-2009), US (b. 1934) |
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| caesar petrillo American musician, songwriter; leader of the American Federation of Musicians (1892-1984), US (b. 1892) |
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| luis m. petrillo Uruguayan writer, UY (b. 1895) |
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| luigi petrillo modern pentathlete, IT (b. 1903) |
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chiara corbella petrillo Italian Servant of God (1984-2012), IT (b. 1984) |
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andi petrillo Canadian sports broadcaster, CA (b. 1985) |
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alok achkar peres petrillo Brazilian musician, DJ and record producer, BR (b. 1991) |
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| leonardo petrillo Italian actor, IT (b. 1957) |
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| steven m. petrillo politician, US (b. 1958) |
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| francesco petrillo Italian Mercedarian priest and theologian (1960-), IT (b. 1960) |
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| sandra petrillo photographer (b. 1961) |
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| agostino petrillo IT (b. 1957) |
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| valentina petrillo blind and transgender athlete competing internationally in the Paralympic Games, IT (b. 1973) |
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| francesco petrillo IT (b. 1964) |
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