Family name Petroniusz (Petroniusz 
, Петроний 
) , all around the world, is a very rare surname. The last name Petroniusz is characteristic of Eastern Europe, particularly Poland, where it is a very rare surname. Much less frequently, Petroniusz is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Petroniusz | Italy, Poland |
| Петроний | Russia |