| Pippin (1) | | - | Ancient Germanic | |
| Plato | | PLAY-to (English) | Ancient Greek (Latinized) | |
| Platon | | - | Ancient Greek, Greek, Russian | |
| Ploutarchos | | - | Ancient Greek | |
| Polycarp | | PAHL-ee-kahrp (English) | Ancient Greek (Anglicized) | |
| Polykarpos | | - | Ancient Greek | |
| Porphyrios | | - | Ancient Greek | |
| Praxiteles | | - | Ancient Greek | |
| Prochoros | | - | Ancient Greek, Biblical Greek | |
| Prokopios | | - | Ancient Greek | |
| Ptolemaios | | - | Ancient Greek | |
| Ptolemais | | - | Ancient Greek | |
| Pyrrhos | | - | Greek Mythology, Ancient Greek | |
| Pyrrhus | | PIR-əs (English) | Greek Mythology (Latinized), Ancient Greek (Latinized) | |
| Pythagoras | | pi-THAG-ər-əs (English) | Ancient Greek | |