| Petri | | PET-ree (Finnish) | Finnish, Basque | |
| Petrica | | - | Romanian | |
| Petrina | | pə-TREE-nə | English (Rare) | |
| Petro | | PE-tro (Esperanto) | Ukrainian, Esperanto | |
| Petrona | | pe-TRO-nah | Spanish | |
| Petronel | | - | English (Archaic) | |
| 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 | |