| Phyllida | Woman | English Names |
| Pierce | Unisex | English Names |
| Piers | Man | English Names |
| Pike | Unisex | English Names |
| Pilot | Unisex | English Names |
| Piper | Unisex | English Names |
| Piperel | Unisex | English Names |
| Pippa | Woman | English Names |
| Pirate | Unisex | English Names |
| Pixie | Woman | English Names |
| Platt | Man | English Names |
| Pleasance | Woman | English Names |
| Plummer | Unisex | English Names |
| Poe | Unisex | English Names |
| Poet | Unisex | English Names |
| Polly | Woman | English Names |
| Pollyanna | Woman | English Names |
| Poole | Unisex | English Names |
| Pope | Unisex | English Names |
| Porter | Unisex | English Names |