| Name | Meaning | Gender | Origin |
|---|
| Pistol | | Unisex | |
| Pixel | | Male | |
| Pixie | A fairy like creature. Playful and mischievous | Female | |
| Pixie | A fairy like creature. Playful and mischievous | Female | Swedish |
| Poco | Little. | Unisex | |
| Pogo | | Unisex | |
| Pollux | crown | Male | Greek |
| Pookie | | Unisex | |
| Poppy | Flower with four crumpled petals in red, orange or white colours | Female | Latin |
| Poppy | Flower with four crumpled petals in red, orange or white colours | Female | Latin |
| Portia | pig, hog or doorway | Female | Latin |
| Possum | Nocturnal marsupial with a thick coat of hair, long nose and long tail | Male | |
| Pounce | | Unisex | |
| Pounce De Leon | aka deLion | Unisex | |
| Powder | Substance of fine particles. Light, dry snow. | Unisex | |
| Precious | One who is beloved, a darling. | Female | Latin |
| Prince | Principal one: first. The rock musician Prince.
| Male | Latin |
| Prince Charming | | Unisex | Hebrew |
| Princess | Female member of a royal family | Female | Word |
| Priscilla | Of ancient lineage | Female | Latin |
| Priss | | Female | |
| Prissy | | Female | |
| Puddy | | Unisex | |
| Puff | Expelling breath, a gust of wind or a small amount of smoke. | Male | |
| Puff | Expelling breath, a gust of wind or a small amount of smoke. | Male | |