| Name | Meaning | Gender | Origin |
|---|
| Penny | Greek, weaver | Female | English |
| Pepper | A spice or condiment. | Male | Sanskrit |
| Perry | French form of Peter
| Male | 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 |
| Petey | | Male | |
| Phantom | Something elusive. A ghost | Unisex | |
| Pheonix | | Unisex | |
| Phineas | oracle; dark-skinned | Male | Hebrew |
| Phoebe | bright one | Female | Greek |
| Phoebe | bright one | Female | Greek |
| Phoenix | Mystical Bird, Purple
| Male | Greek |
| Phoenix | Mystical Bird, Purple
| Male | Greek |
| Pickles | Food flavored in a solution of vinegar | Unisex | |
| Pierce | rock | Unisex | |
| Pierce | rock | Male | English |
| Pierre | A rock. Form of Peter.
| Male | |
| Pip | Small seed of a fruit. Also "Pipsqueak" one that is small | Male | English |
| Piper | Piper
| Female | English |
| Pippin | Name of a king
| Male | |
| Pipsqueak | | Unisex | Hebrew |
| Pixel | | Male | |
| Pixie | A fairy like creature. Playful and mischievous | Female | |
| Pixie | A fairy like creature. Playful and mischievous | Female | Swedish |
| Pj | | Unisex | |
| Poindexter | | Unisex | |