| Name | Meaning | Gender | Origin |
|---|
| Pittheus | Myth Name (King Of Trozen) | Male | Greek |
| Pius | Pious | Male | Swiss |
| Plexippus | Myth Name (An Argonaut) | Male | Greek |
| Plutus | Myth Name (Wealth) | Male | Greek |
| Polydorus | Myth Name (Son Of Priam) | Male | Greek |
| Polyeidus | Myth Name (A Seer) | Male | Greek |
| Polyphemus | Myth Name (Son Of Poseidon) | Male | Greek |
| Pontus | Sea | Male | Greek |
| Prasutagus | Name Of A King | Male | Anglo |
| Priapus | Myth Name (God Of Fertility) | Male | Greek |
| Procrustes | Myth Name (Stretcher) | Male | Greek |
| Prometheus | Myth Name (Gave Fire To Man) | Male | Greek |
| Protesilaus | Myth Name (Offered Himself As A Sacrifice For The Greeks When They Arrived At Troy) | Male | Greek |
| Proteus | Myth Name (A Sea God) | Male | Greek |
| Psusennes | Name Of A Pharaoh | Male | Egyptian |
| Pyramus | Myth Name (Lover Of Thisbe) | Male | Greek |
| Pyrrhus | Myth Name (King Of Epirus) | Male | Greek |
| Rasmus | Amiable | Male | Greek |
| Rhadamanthus | Myth Name (A Judge In The Underworld) | Male | Greek |
| Rhesus | Myth Name (King Of Thrace) | Male | Greek |
| Rhoecus | Myth Name (Saved Hamadryad) | Male | Greek |
| Rousse | Red Haired | Male | French |
| Roussel | Reddish | Male | French |
| Rousset | Red Haired | Male | French |
| Rousskin | Red Haired | Male | French |
| Rusalka | Wood Sprite | Female | Czechoslovakian |
| Rush | Red Haired | Male | French |
| Rushe | Red Haired | Male | French |
| Rushford | Lives Near The Rush Ford | Male | English |
| Rushkin | Red Haired | Male | French |