| Name | Meaning | Gender | Origin |
|---|
| Powder | Substance of fine particles. Light, dry snow. | Unisex | English |
| Pretty | | Unisex | Hebrew |
| Princess | Royal son | Female | English |
| Puddles | | Unisex | Hebrew |
| Puff | Expelling breath, a gust of wind or a small amount of smoke. | Unisex | English |
| Pumpkin | Large round fruit with orange skin | Unisex | English |
| Purity | Purity | Female | English |
| Queenie | Female ruler | Female | English |
| Rascal | One that is playfully mischievous | Unisex | English |
| Rina | Pet form of names in -rina | Female | English |
| Robin | Bright fame | Female | Germanic |
| Rosie | Rose | Female | Latin |
| Roxy | Star | Female | Persian |
| Sadie | Princess | Female | Hebrew |
| Sammy | His name is God | Unisex | Hebrew |
| Sasha | Defending men | Unisex | Greek |
| Sassy | Lively and spirited | Unisex | English |
| Scooter | One who goes suddenly and speedily. | Unisex | English |
| Serenity | Peacefulness | Female | English |
| Sheba | Daughter of an oath | Female | Hebrew |
| Shelby | A place where willows grow | Female | American English |
| Shorty | Of less than average size | Unisex | English |
| Sierra | Mountain range | Female | Spanish |
| Simba | Lion | Female | Swahili |
| Skippy | Master of a Ship | Unisex | American English |
| Slim | Slender in proportion to height. | Unisex | English |
| Smiley | | Unisex | Hebrew |
| Snoopy | | Unisex | Hebrew |
| Snowball | | Unisex | Hebrew |
| Sophie | Wisdom | Female | Greek |