| Name | Meaning | Gender | Origin |
|---|
| Sable | Sable (black) | Unisex | English |
| Sabre | | Unisex | Hebrew |
| Sacha | Protector of man | Male | Greek |
| Sadie | Princess | Female | Hebrew |
| Sam | He is called god | Male | Hebrew |
| Samantha | Listener | Female | Aramaic |
| Sammy | His name is God | Unisex | Hebrew |
| Sampson | Sun | Unisex | Hebrew |
| Sapphire | Beautiful jewel | Female | Greek |
| Sasha | Defending men | Unisex | Greek |
| Satan | The Devil and adversary of God | Unisex | English |
| Satin | Amber | Female | Armenian |
| Saturn | Sixth and second largest planet away from the Sun. | Unisex | English |
| Scarlet | Scarlet | Female | English |
| Scout | Observer | Unisex | American English |
| Seth | Appointed | Male | Hebrew |
| Shadow | Shadow | Unisex | English |
| Shelby | A place where willows grow | Female | American English |
| Sierra | Mountain range | Female | Spanish |
| Silver | Silver (the metal or colour) | Male | English |
| Simba | Lion | Female | Swahili |
| Smoky | | Unisex | Hebrew |
| Snowy | Covered with snow | Female | English |
| Sophie | Wisdom | Female | Greek |
| Sparky | Animated, lively. | Unisex | English |
| Spike | A long, thick sharp-pointed piece of wood or metal | Male | English |
| Star | Star | Female | Latin |
| Storm | Violent weather | Female | English |
| Sugar | A sweet powder from sugar cane. Slang for sweetheart. | Female | English |
| Taffy | Beloved | Female | Welsh |