| Name | Meaning | Gender | Origin |
|---|
| Rusty | Rusty, full of rust | Unisex | American English |
| Sabre | | Unisex | Hebrew |
| Sam | He is called god | Male | Hebrew |
| Sammy | His name is God | Unisex | Hebrew |
| Samson | Sun | Male | Hebrew |
| Sandy | Defending men | Male | Greek |
| Sasha | Defending men | Unisex | Greek |
| Sassy | Lively and spirited | Unisex | English |
| Scout | Observer | Unisex | American English |
| Shadow | Shadow | Unisex | English |
| Simon | Listening | Male | Hebrew |
| Smoky | | Unisex | Hebrew |
| Sparkle | To shine with animation | Unisex | English |
| Sparky | Animated, lively. | Unisex | English |
| Spike | A long, thick sharp-pointed piece of wood or metal | Male | English |
| Spirit | Part of the human being associated with the mind. Vigorous or animated state - spirited. Also distilled alcohol. | Unisex | English |
| Stephan | Crown | Male | Greek |
| Tank | A large metal container. A heavily armed combat vehicle | Unisex | English |
| Taz | Wild Animal, Thrid Born | Unisex | American |
| T-bone | A thick steak containing a T shaped bone. | Unisex | English |
| Teddy | Gift of God | Male | Greek |
| Tiny | Extremely small | Unisex | English |
| Tito | Giant | Unisex | Latin |
| Toby | God is good | Unisex | Hebrew |
| Truffles | Ball shaped chocolate | Unisex | English |
| Tucker | Someone who folds cloth | Male | English |
| Tyson | Son of Dye | Male | English |
| Victor | Victor | Male | Latin |
| Walter | Ruler of the army | Male | Germanic |
| Willie | Will, desire and helmet, protection | Male | Germanic |