Surname Pietrobelli (Pietrobelli 
) , across the world, is quite a rare cognomen. The family name Pietrobelli is characteristic of Italy, where it is quite a rare surname, Argentina, where it is a rare surname, and Switzerland. Not in comparison with a country's population, this name is the most popular in Italy, Brazil, and Argentina. Much less frequently, Pietrobelli is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Pietrobelli | Germany, France, Argentina, Italy, Brazil |
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francesco pietrobelli Argentinian merchant, AR (b. 1858) |
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| carlo pietrobelli economist (Università degli Studi Roma Tre; United Nations University-Maastricht Economic Research Institute of Innovation and Technology (UNU-MERIT)) (b. 1959) |
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| annalisa pietrobelli researcher |
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| pablo pietrobelli Argentine javelin thrower, AR (b. 1980) |
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| angelo pietrobelli researcher ORCID ID = 0000-0002-9912-3232 |
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| antoine pietrobelli (b. 1974) |
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Mr, Gino, Lara, Lais, Leci, Lola, Luca, Luis, Luiz, Jose, Joao, Juan, Nedi, Elsa, Elba, Eloi, Elto, Eder, Erni, Enzo, Ezio, Vera, Gian, Ines, Gema, Gaia, Ms, Ana, Leo, Ema, Emy, Eva, Ivo, Mara, Mery, Sadi, Aldo, Anna, Abel, Adan, Axel, Caio, Paul, Raul, Rosa, Rita, Diva, Geni, and Irio