| Name | Meaning | Gender | Origin |
|---|
| Sal | Saviour | Male | Italian |
| Sam | He is called god | Male | Hebrew |
| Sandy | Defending men | Male | Greek |
| Sarge | Noncommissioned Army or Air Force rank | Unisex | English |
| Sasha | Defending men | Unisex | Greek |
| Satan | The Devil and adversary of God | Unisex | English |
| Satin | Amber | Female | Armenian |
| Scarlet | Scarlet | Female | English |
| Scooter | One who goes suddenly and speedily. | Unisex | English |
| Shadow | Shadow | Unisex | English |
| Shark | | Unisex | Hebrew |
| Shelby | A place where willows grow | Female | American English |
| Skye | Cloud | Male | Norse |
| Sophie | Wisdom | Female | Greek |
| Spike | A long, thick sharp-pointed piece of wood or metal | Male | English |
| Stone | Stone | Male | English |
| Sunny | Filled with sunlight | Male | English |
| Tammy | Twin | Female | Aramaic |
| Tank | A large metal container. A heavily armed combat vehicle | Unisex | English |
| Tasha | (Christ's) birthday | Female | Latin |
| Terry | Ruler of the people | Unisex | Germanic |
| Tex | Of Texas | Unisex | English |
| Thunder | Stormy Tempered | Unisex | English |
| Tiger | Tiger | Unisex | English |
| Titan | Powerful big man | Unisex | Greek |
| Toby | God is good | Unisex | Hebrew |
| Trip | Traveler | Unisex | English |
| Vesta | Guardian Of The Sacred Fire | Female | Latin |
| Whisper | | Unisex | Hebrew |
| Wolf | Wolf | Male | English |