Family name Петя (Petya 
, Петя 
, Petia 
, and others...) , all over the world, is quite a rare last name. The surname Петя is characteristic of Moldova, where it is quite a rare surname, Armenia, and Bulgaria. Measured by absolute frequency, the name is most common in India, South Africa, and Russia. More frequently, Петя is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Petya | Bulgaria, India, South Africa, United States, Russia |
| Петя | Moldova, Bulgaria, Belarus, Armenia, Russia |
| Petia | Bulgaria, India, Greece, United States, Russia |
| Petja | Bulgaria, Slovenia, South Africa, United States, Germany |
| Petiya | Philippines, United States, India, Bulgaria |
Bedros, Pero, Petelo, Peter, Peters, Petr, Petras, Petro, Petros, Petru, Piatro, Piero, Pierre, Pietro, Piotr, Piters, Pjotr, Pyotr, Pēteris, Πέτρος, Πέτρου, П'Ер, П'Єр, Перо, Петар, Петер, Петерис, Петеріс, Петр, Петрас, Петро, Петрос, Петру, Петър, Питер, Питер, Петер, Пйотр, Пьер, Пьеро, Пьетро, Пьотр, Пьотър, Пятрас, Пятро, Пётар, Пётр, פטר, פטרו, פיטר, פייר, פרו, بترو, بيتر, بيترو, بيرو, بيوتر, بيير, بييرو, پتروس, পিটার, ปิแอร์, オルガ, ピエロ, ピエール, ピオトル, ピョートル, ピーター, ペトラ, ペロ, ペーター, 佩卓, 佩翠, 彼得, 彼德, and 皮埃爾