| Photios | | - | Greek, Ancient Greek | |
| Phrixos | | - | Greek Mythology | |
| Phrixus | | - | Greek Mythology (Latinized) | |
| Phyllis | | FIL-is (English) | Greek Mythology, English, German | |
| Pistis | | - | Greek Mythology | |
| Plato | | PLAY-to (English) | Ancient Greek (Latinized) | |
| Platon | | - | Ancient Greek, Greek, Russian | |
| Ploutarchos | | - | Ancient Greek | |
| Plouton | | - | Greek Mythology | |
| Pluto | | PLOO-to (English) | Greek Mythology (Latinized), Roman Mythology | |
| Polycarp | | PAHL-ee-kahrp (English) | Ancient Greek (Anglicized) | |
| Polydeukes | | - | Greek Mythology | |
| Polyhymnia | | - | Greek Mythology (Latinized) | |
| Polykarpos | | - | Ancient Greek | |
| Polymnia | | - | Greek Mythology | |