| Pallas (2) | | - | Greek Mythology | |
| Pan | | - | Greek Mythology | |
| Pandora | | pan-DAWR-ə (English) | Greek Mythology | |
| Papa | | - | Polynesian Mythology | |
| Paris (1) | | PER-is (English), PAR-is (English) | Greek Mythology | |
| ParthalÁN | | PAHR-ha-lawn | Irish Mythology | |
| Parthenia | | par-THEE-nee-ə (English) | Greek Mythology | |
| Parthenope | | - | Greek Mythology | |
| Patroclus | | - | Greek Mythology (Latinized) | |
| Patroklos | | - | Greek Mythology | |
| Pax | | - | Roman Mythology | |
| Pegasus | | PEG-ə-səs (English) | Greek Mythology (Latinized) | |
| Pekko | | - | Finnish Mythology | |
| Pele | | - | Polynesian Mythology | |
| Penelope | | pə-NEL-ə-pee (English) | Greek Mythology, English | |