| Name | Meaning | Gender | Origin |
|---|
| Raisin | | Unisex | Hebrew |
| Rat | | Unisex | Hebrew |
| Rebel | One that resists of defies authority | Unisex | English |
| Remi | Abbreviation Of Remington. | Unisex | English |
| Rogue | | Unisex | Hebrew |
| Sable | Sable (black) | Unisex | English |
| Sasha | Defending men | Unisex | Greek |
| Satan | The Devil and adversary of God | Unisex | English |
| Shade | Sweetly singing | Unisex | African |
| Shadow | Shadow | Unisex | English |
| Shaq | Handsome | Unisex | Arabic |
| Shilo | Gift for him | Unisex | Hebrew |
| Silky | Soft as silk. | Unisex | English |
| Sir | | Unisex | Hebrew |
| Sky | Sky | Unisex | Norse |
| Smokey | A grayish blue colour. Slang for highway patrol officer | Unisex | English |
| Smoky | | Unisex | Hebrew |
| Sooty | Covered with soot | Unisex | English |
| Spade | | Unisex | Hebrew |
| Spider | An eight legged insect | Unisex | English |
| Spot | After Data's cat on Star Trek: The Next Generation | Unisex | English |
| Stormy | Violent weather | Unisex | English |
| Tango | | Unisex | Hebrew |
| Thunder | Stormy Tempered | Unisex | English |
| Tuff | Fun spelling of tough; strong and resilient. | Unisex | English |
| Tulip | | Unisex | Hebrew |
| Twister | A cyclone or tornado. | Unisex | English |
| Twizzler | | Unisex | Hebrew |
| Ty | Abbreviation For Names Beginning With Ty-. | Unisex | American English |
| Uno | | Unisex | Hebrew |