| Name | Meaning | Gender | Origin |
|---|
| Pearl | Precious jewel. A hard, rounded gem, usually white in colour | Female | Latin |
| Penny | Greek, weaver | Female | English |
| Persephone | The daughter of Demeter and Zeus who was abducted by Hades but rescued by her mother and thereafter spent six months of the year on earth and six months in the underworld.
| Female | Greek |
| Phantom | Something elusive. A ghost | Unisex | |
| Pheonix | | Unisex | |
| Phoebe | bright one | Female | Greek |
| Phoebe | bright one | Female | Greek |
| Pickles | Food flavored in a solution of vinegar | Unisex | |
| Pierce | rock | Unisex | |
| Piper | Piper
| Female | English |
| Pipsqueak | | Unisex | Hebrew |
| Pixie | A fairy like creature. Playful and mischievous | Female | |
| Pixie | A fairy like creature. Playful and mischievous | Female | Swedish |
| Pj | | Unisex | |
| Poindexter | | Unisex | |
| Polaris | | Unisex | Hebrew |
| Pookie | | Unisex | |
| Precious | One who is beloved, a darling. | Female | Latin |
| Princess | Female member of a royal family | Female | Word |
| Prudence | caution | Female | |
| Puma | | Female | |
| Pumpernickle | | Unisex | |
| Punky | | Unisex | |
| Ramona | Wise defender
| Female | Spanish |
| Raven | Dark haired or wise
| Female | Word |