| Name | Meaning | Gender | Origin |
|---|
| Ralph | Wolf council | Male | Germanic |
| Rorschach | | Unisex | Hebrew |
| Rufus | Red | Male | Latin |
| Scamper | | Unisex | Hebrew |
| Scooter | One who goes suddenly and speedily. | Unisex | English |
| Scout | Observer | Unisex | American English |
| Skipper | Master of a Ship | Male | American English |
| Sleepy | | Unisex | Hebrew |
| Smokey | A grayish blue colour. Slang for highway patrol officer | Unisex | English |
| Smoky | | Unisex | Hebrew |
| Smudge | A blotch or smear | Unisex | English |
| Snicker | | Unisex | Hebrew |
| Sniff | A short inhale through the nose. To savour or investigate a smell. | Unisex | English |
| Snowball | | Unisex | Hebrew |
| Spanky | | Unisex | Hebrew |
| Sparky | Animated, lively. | Unisex | English |
| Speckles | | Unisex | Hebrew |
| Speedy | Rapid motion, swift. | Unisex | English |
| Squeaky | | Unisex | Hebrew |
| Squirrel | | Unisex | Hebrew |
| Steve | Crown | Male | Greek |
| Stripes | | Unisex | Hebrew |
| Sugar | A sweet powder from sugar cane. Slang for sweetheart. | Female | English |
| Tac | | Unisex | Hebrew |
| Tic | | Unisex | Hebrew |
| Tiger | Tiger | Unisex | English |
| Toffee | A hard brown, chewy candy | Unisex | English |
| Tripod | | Unisex | Hebrew |
| Twister | A cyclone or tornado. | Unisex | English |
| Whitie | | Unisex | Hebrew |