| Petar | | - | Serbian, Croatian, Bulgarian, Macedonian | |
| Peter | | PEE-tər (English), PE-ter (German, Slovak), PAY-tər (Dutch) | English, German, Dutch, Swedish, Norwegian, Danish, Slovene, Slovak, Biblical | |
| Petera | | - | Maori | |
| Peti | | - | Hungarian | |
| Petia | | - | Russian, Bulgarian | |
| Petko | | - | Bulgarian, Macedonian | |
| Petra | | PET-rah (Finnish), PET-rə (English) | German, Dutch, Czech, Slovak, Slovene, Croatian, Hungarian, Swedish, Finnish, English | |
| Petras | | - | Lithuanian | |
| Petre | | PE-tre (Romanian) | Romanian, Macedonian, Georgian | |
| 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) | |