| Name | Meaning | Gender | Origin |
|---|
| Peanut | Edible nuts eaten raw or roasted. | Unisex | English |
| Pearl | Pearl | Female | English |
| Pebbles | After the character in 'The Flintstones' cartoons | Female | English |
| Penelope | Weaver | Female | Greek |
| Pepper | Pepper | Female | English |
| Phantom | Something elusive. A ghost | Unisex | English |
| Phoebe | Bright | Female | Greek |
| Piper | A pipe player | Female | English |
| Pixie | A fairy like creature. Playful and mischievous | Female | English |
| Pockets | | Unisex | Hebrew |
| Pogo | | Unisex | Hebrew |
| Poopsie | | Unisex | Hebrew |
| Popcorn | Corn that when heated forms white edible puffs. | Unisex | English |
| Portia | Pig | Female | Latin |
| Prancer | | Unisex | Hebrew |
| Princess | Royal son | Female | English |
| Priscilla | Ancient | Female | Latin |
| Puddin | | Unisex | Hebrew |
| Puddles | | Unisex | Hebrew |
| Pumpkin | Large round fruit with orange skin | Unisex | English |
| Puppy | | Unisex | Hebrew |
| Queen | Female ruler | Unisex | English |
| Rags | | Unisex | Hebrew |
| Rainbow | Rainbow | Unisex | English |
| Rambo | | Unisex | Hebrew |
| Rascal | One that is playfully mischievous | Unisex | English |
| Rasta | | Unisex | Hebrew |
| Reagan | Descendent of Riagán | Unisex | Gaelic |
| Ripple | | Unisex | Hebrew |
| Rocko | | Unisex | Hebrew |