| Name | Meaning | Gender | Origin |
|---|
| Pinky | For Pinky Lee, the painting, and the color of her nose | Unisex | |
| Pookie | | Unisex | |
| Porkchop | | Unisex | Hebrew |
| Puddin | | Unisex | |
| Puddin | | Unisex | |
| Puddin | | Unisex | |
| Pumpkin | Large round fruit with orange skin | Male | |
| Punky | | Unisex | |
| Rigby | Lives in the ruler
| Male | English |
| Ripley | after the novel and the movie The Talented Mr. Ripley | Male | English |
| Rocky | rest | Male | English |
| Rococo | | Unisex | Hebrew |
| Romeo | pilgrim to Rome | Male | Italian |
| Rosebud | | Unisex | Hebrew |
| Ruffles | A strip of frilled fabric. Irregular | Unisex | |
| Rusty | Covered in rust - a brownish red colour. | Unisex | |
| Sabine | Of Sabine, Italy | Unisex | French |
| Sallie | Princess | Unisex | English |
| Sammy | Hebrew, told by God | Male | English |
| Samuel | his name is God | Male | Hebrew |
| Sandy | Abbreviation of Alexander defender of man.
| Male | Scottish |
| Scooter | One who goes suddenly and speedily. | Male | |
| Scout | One dispatched from main body to gather information | Male | Word |
| Scully | Herald
| Male | Irish |
| Sebastian | An august person | Male | Latin |