| Name | Meaning | Gender | Origin |
|---|
| Rambo | | Unisex | Hebrew |
| Raquel | Ewe | Female | Hebrew |
| Rascal | One that is playfully mischievous | Unisex | English |
| Reanna | Nymph | Female | Welsh |
| Remy | Abbreviation Of Remington. | Female | English |
| Riona | Royal | Female | English |
| Robin | Bright fame | Female | Germanic |
| Rocket | To move swiftly and powerfully | Unisex | English |
| Rookie | | Unisex | Hebrew |
| Rosalie | Rose | Female | Latin |
| Rose | Rose | Female | Latin |
| Roxana | Star | Female | Persian |
| Ruby | Red | Female | Latin |
| Sabrina | A Welsh river name | Female | Gaelic |
| Sadie | Princess | Female | Hebrew |
| Scarlet | Scarlet | Female | English |
| Skeeter | | Unisex | Hebrew |
| Skittles | | Unisex | Hebrew |
| Sniper | A skilled shooter who spots targets from a concealed place. | Unisex | English |
| Solange | Solemn | Female | Latin |
| Sophie | Wisdom | Female | Greek |
| Spanky | | Unisex | Hebrew |
| Sparky | Animated, lively. | Unisex | English |
| Spaz | For a spazy kitty | Unisex | English |
| Speedy | Rapid motion, swift. | Unisex | English |
| Spirit | Part of the human being associated with the mind. Vigorous or animated state - spirited. Also distilled alcohol. | Unisex | English |
| Spunky | Spirited, plucky. | Unisex | English |
| Sticky | | Unisex | Hebrew |
| Susannah | Lily | Female | Hebrew |
| Tallulah | Abundance, lady, princess | Female | Gaelic |