| Name | Meaning | Gender | Origin |
|---|
| Panda | A bear like Chinese mammal, with distinct black and white markings | Unisex | English |
| Peanut | Edible nuts eaten raw or roasted. | Unisex | English |
| Penny | Weaver | Female | Greek |
| Pepper | Pepper | Female | English |
| Pip | Lover of horses | Unisex | Greek |
| Pipsqueak | | Unisex | Hebrew |
| Pixie | A fairy like creature. Playful and mischievous | Female | English |
| Poco | Little. | Unisex | English |
| Poppy | Poppy flower | Female | English |
| Portia | Pig | Female | Latin |
| Prince | Royal son | Male | English |
| Princess | Royal son | Female | English |
| Puddles | | Unisex | Hebrew |
| Puff | Expelling breath, a gust of wind or a small amount of smoke. | Unisex | English |
| Pumpkin | Large round fruit with orange skin | Unisex | English |
| Queenie | Female ruler | Female | English |
| Rags | | Unisex | Hebrew |
| Rascal | One that is playfully mischievous | Unisex | English |
| Reiko | Courteous child | Female | Japanese |
| Reina | Pure | Female | Yiddish |
| Ren | Water lily | Female | Japanese |
| Riku | Shore | Female | Japanese |
| Riley | Rye clearing | Male | English |
| Rin | Cold | Unisex | Japanese |
| Rina | Pet form of names in -rina | Female | English |
| Ringo | Apple, peace be with you | Male | English |
| Rio | River | Male | Spanish |
| Risa | Sand of the village | Female | Japanese |
| Rocky | Battle cry | Male | Germanic |
| Rollo | Famous wolf | Male | English |