| Name | Meaning | Gender | Origin |
|---|
| Sabre | | Unisex | Hebrew |
| Sam | He is called god | Male | Hebrew |
| Sammy | His name is God | Unisex | Hebrew |
| Samson | Sun | Male | Hebrew |
| Sasha | Defending men | Unisex | Greek |
| Sassy | Lively and spirited | Unisex | English |
| Scooter | One who goes suddenly and speedily. | Unisex | English |
| Scout | Observer | Unisex | American English |
| Shadow | Shadow | Unisex | English |
| Shorty | Of less than average size | Unisex | English |
| Silver | Silver (the metal or colour) | Male | English |
| Smiley | | Unisex | Hebrew |
| Smoky | | Unisex | Hebrew |
| Snowball | | Unisex | Hebrew |
| Snowflake | Single flake or crystal of snow. | Unisex | English |
| Sparky | Animated, lively. | Unisex | English |
| Sprite | Lemonade flavored soft drink. | Unisex | English |
| Stormy | Violent weather | Unisex | English |
| Sully | Keen eye | Male | Gaelic |
| Tacoma | | Unisex | Hebrew |
| Teddy | Gift of God | Male | Greek |
| Tip | From Thomas, Meaning Twin | Unisex | Greek |
| Titan | Powerful big man | Unisex | Greek |
| Toby | God is good | Unisex | Hebrew |
| Tony | Derived From Victoria Triumphant. | Male | Latin |
| Tucker | Someone who folds cloth | Male | English |
| Uno | | Unisex | Hebrew |
| Vanilla | Flavouring agent from the vanilla bean | Unisex | English |
| Vinnie | Conquering | Male | Latin |
| Weezer | | Unisex | Hebrew |