| Name | Meaning | Gender | Origin |
|---|
| Patsy | A patrician | Female | Latin |
| Peanut | Edible nuts eaten raw or roasted. | Unisex | English |
| Penelope | Weaver | Female | Greek |
| Penny | Weaver | Female | Greek |
| Peony | Type of flower | Female | English |
| Pepe | He will enlarge | Unisex | Hebrew |
| Pepper | Pepper | Female | English |
| Petal | A section of a flower | Unisex | English |
| Pewter | | Unisex | Hebrew |
| Ping | Fair | Unisex | Chinese |
| Pip | Lover of horses | Unisex | Greek |
| Pippin | Foreigner, stranger | Unisex | Latin |
| Pipsqueak | | Unisex | Hebrew |
| Pirate | | Unisex | Hebrew |
| Pixie | A fairy like creature. Playful and mischievous | Female | English |
| Pocket | | Unisex | Hebrew |
| Poco | Little. | Unisex | English |
| Polly | Bitter | Female | Hebrew |
| Pookie | | Unisex | Hebrew |
| Popcorn | Corn that when heated forms white edible puffs. | Unisex | English |
| Poppy | Poppy flower | Female | English |
| Porky | | Unisex | Hebrew |
| Princess | Royal son | Female | English |
| Puddles | | Unisex | Hebrew |
| Puffin | | Unisex | Hebrew |
| Pumpkin | Large round fruit with orange skin | Unisex | English |
| Queenie | Female ruler | Female | English |
| Rascal | One that is playfully mischievous | Unisex | English |
| Reggie | Ruler with counsel | Unisex | Germanic |
| Rina | Pet form of names in -rina | Female | English |