Around the globe, Пьетро (Pietro 
, Valdoni 
, Pedrillo 
) is a widespread masculine first name. The forename Пьетро is characteristic of San Marino, where it is a widespread masculine name, Italy, and Brazil, where it is quite a common boy's name. Measured by absolute frequency, it is the most numerous in Italy, Brazil, and Germany. Very seldom, Пьетро is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Pietro | Germany, Italy, Brazil, United States, France |
| Valdoni | Italy, Brazil, Belgium, United States, Argentina |
| Pedrillo | Brazil, Spain, United States, Peru, Argentina |
| Пьетро | Russia |
Andrea, Bedros, De, Kepa, Liberi, Paolo, Peder, Pedro, Pedru, Peer, Peeter, Peetu, Pehr, Per, Pere, Pero, Peru, Petar, Petelo, Peter, Peters, Petko, Petr, Petras, Petri, Petro, Petros, Petru, Petrus, Petter, Petteri, Petur, Piatro, Piero, Pierre, Piet, Pietari, Pieter, Pietru, Piotr, Piters, Pjeter, Pjetro, Pjetur, Pjetër, Pjotr, Pyetro, Pyotr, Péter, Pétur,
Пьетро is also a prevalent name for the fictitious and mythical characters: Pietro Gonnella , the Italian court jester at the House of Este court in Ferrara(1390-1441); Quicksilver , the fictional character in Marvel Comics, Deadpool 2; Pietro Maximoff , the fictional character from the Marvel Cinematic Universe, Avengers: Age of Ultron; Pietro Calzoni , the fictional Teenage Mutant Ninja Turtles character, The Big Cufflink Caper and Pedrillo , the operatic character in the opera Die Entführung aus dem Serail by Wolfgang Amadeus Mozart; Belmonte's servant, and in many other works.