| Name | Meaning | Gender | Origin |
|---|
| Pansy | Thought | Female | English |
| Patsy | A patrician | Female | Latin |
| Paws | | Unisex | Hebrew |
| Peanut | Edible nuts eaten raw or roasted. | Unisex | English |
| Penny | Weaver | Female | Greek |
| Pepper | Pepper | Female | English |
| Perry | Foreigner, stranger | Male | Latin |
| Phoebe | Bright | Female | Greek |
| Pip | Lover of horses | Unisex | Greek |
| Pixie | A fairy like creature. Playful and mischievous | Female | English |
| Polly | Bitter | Female | Hebrew |
| Princess | Royal son | Female | English |
| Puddles | | Unisex | Hebrew |
| 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 |
| Reese | Enthusiasm | Male | Welsh |
| Riley | Rye clearing | Male | English |
| Rio | River | Male | Spanish |
| Rocket | To move swiftly and powerfully | Unisex | English |
| Rocky | Battle cry | Male | Germanic |
| Rolo | Burmese | Unisex | English |
| Rosie | Rose | Female | Latin |
| Rowdy | Boisterous. Western Nickname. | Unisex | English |
| Roxy | Star | Female | Persian |
| Rufus | Red | Male | Latin |
| Sadie | Princess | Female | Hebrew |
| Saffron | From the spice or the colour, yellow | Female | English |
| Sally | Princess | Female | Hebrew |