Surname Petrych (Petrych 
, Петрич 
) , around the world, is a rare family name. The cognomen Petrych is characteristic of Ukraine, where it is a rare surname, Russia, and Kazakhstan. Much less frequently, Petrych is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Petrych | Hungary, Greece, United States, Poland, Brazil |
| Петрич | Kazakhstan, Russia, Kyrgyzstan, Ukraine |