| Name | Meaning | Gender | Origin |
|---|
| 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 |
| 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 |
| 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 |
| Roxie | Star | Unisex | Persian |
| Sasha | Defending men | Unisex | Greek |
| Sassy | Lively and spirited | Unisex | English |
| Shorty | Of less than average size | Unisex | English |
| Skeeter | | Unisex | Hebrew |
| Skittles | | Unisex | Hebrew |
| Slim | Slender in proportion to height. | Unisex | English |
| Smiley | | Unisex | Hebrew |
| Smudge | A blotch or smear | Unisex | English |
| Snickers | A brand of candy bar. | Unisex | English |
| Snookums | | Unisex | Hebrew |