| Petrona | | pe-TRO-nah | Spanish | |
| Petronela | | - | Romanian, Slovak, Polish | |
| Petronella | | pe-tro-NE-lah (German) | Dutch, German, Swedish | |
| Petronia | | - | Ancient Roman | |
| Petronilla | | - | Italian, Late Roman | |
| Petronius | | - | Ancient Roman | |
| Petros | | - | Greek, Armenian, Biblical Greek | |
| Petru | | - | Romanian, Corsican, Old Church Slavic | |
| Petruccio | | - | Medieval Italian | |
| Petrus | | PE-truws (German) | Dutch, German, Biblical Latin | |
| Petter | | - | Swedish, Norwegian | |
| Petya | | - | Russian, Bulgarian | |
| Phaedrus | | - | Ancient Greek (Latinized) | |
| Phaidros | | - | Ancient Greek | |
| Phanuel | | - | Biblical, Judeo-Christian Legend | |