| Name | Meaning | Gender | Origin |
|---|
| Rocket | To move swiftly and powerfully | Unisex | English |
| Rogue | | Unisex | Hebrew |
| Rugrat | | Unisex | Hebrew |
| Rusty | Rusty, full of rust | Unisex | American English |
| Sabre | | Unisex | Hebrew |
| Sammy | His name is God | Unisex | Hebrew |
| Sasha | Defending men | Unisex | Greek |
| Sassy | Lively and spirited | Unisex | English |
| Scout | Observer | Unisex | American English |
| Scruff | | Unisex | Hebrew |
| Shadow | Shadow | Unisex | English |
| Smoky | | Unisex | Hebrew |
| Sonic | Approaching the speed of sound, fast-paced | Unisex | English |
| Sparky | Animated, lively. | Unisex | English |
| Spice | Plant used to flavour food or beverages. | Unisex | English |
| Sundance | | Unisex | Hebrew |
| Taco | A folded fried tortilla filled with meat, cheese and spices. | Unisex | English |
| Toby | God is good | Unisex | Hebrew |
| Waffles | | Unisex | Hebrew |
| Whisper | | Unisex | Hebrew |