| Name | Meaning | Gender | Origin |
|---|
| Payton | Settlement of PÅ“ga | Male | English |
| Pea | | Unisex | Hebrew |
| Peaches | Red, yellow skinned fleshy fruit | Unisex | English |
| Peanut | Edible nuts eaten raw or roasted. | Unisex | English |
| Peewee | | Unisex | Hebrew |
| Peppy | | Unisex | Hebrew |
| Picasso | | Unisex | Hebrew |
| Pickles | Food flavored in a solution of vinegar | Unisex | English |
| Pico | | Unisex | Hebrew |
| Pierre | Stone | Male | Greek |
| Pinky | For Pinky Lee, the painting, and the color of her nose | Unisex | English |
| Pip | Lover of horses | Unisex | Greek |
| Pippin | Foreigner, stranger | Unisex | Latin |
| Pipsqueak | | Unisex | Hebrew |
| Pixel | | Unisex | Hebrew |
| Poco | Little. | Unisex | English |
| Pookie | | Unisex | Hebrew |
| Popcorn | Corn that when heated forms white edible puffs. | Unisex | English |
| Prince | Royal son | Male | English |
| Puddles | | Unisex | Hebrew |
| Pumpkin | Large round fruit with orange skin | Unisex | English |
| Quimby | From the woman's estate | Unisex | English |
| Raisin | | Unisex | Hebrew |
| Rascal | One that is playfully mischievous | Unisex | English |
| Renny | To Rise Again. | Male | English |
| Rollo | Famous wolf | Male | English |
| Romeo | Pilgrim to Rome | Male | Italian |
| Rowan | Little red one | Male | Gaelic |
| Roxie | Star | Unisex | Persian |
| Russell | Little red one | Male | French |