| Patroclus | | - | Greek Mythology (Latinized) | |
| Pegasus | | PEG-ə-səs (English) | Greek Mythology (Latinized) | |
| Phaedra | | - | Greek Mythology (Latinized) | |
| Philander | | - | English (Archaic), Greek Mythology (Latinized) | |
| Phoebe | | FEE-bee (English) | English, Greek Mythology (Latinized), Biblical, Biblical Latin | |
| Phoebus | | - | Greek Mythology (Latinized) | |
| Phrixus | | - | Greek Mythology (Latinized) | |
| Pluto | | PLOO-to (English) | Greek Mythology (Latinized), Roman Mythology | |
| Polyhymnia | | - | Greek Mythology (Latinized) | |
| Polyxena | | - | Greek Mythology (Latinized) | |
| Pyrrhus | | PIR-əs (English) | Greek Mythology (Latinized), Ancient Greek (Latinized) | |