| Name | Meaning | Gender | Origin |
|---|
| Socks | Short stockings finishing above the ankle | Unisex | English |
| Soda | A carbonated water. | Unisex | English |
| Sparky | Animated, lively. | Unisex | English |
| Spaz | For a spazy kitty | Unisex | English |
| Spike | A long, thick sharp-pointed piece of wood or metal | Male | English |
| Spot | After Data's cat on Star Trek: The Next Generation | Unisex | English |
| Sprite | Lemonade flavored soft drink. | Unisex | English |
| Squirt | Slang for a small person | Unisex | English |
| Stumpy | A short, thickset person | Unisex | English |
| Tango | | Unisex | Hebrew |
| Teddy | Gift of God | Male | Greek |
| Thunder | Stormy Tempered | Unisex | English |
| Timmy | To honor God, to fear God | Male | Greek |
| Tobey | God is good | Unisex | Hebrew |
| Toby | God is good | Unisex | Hebrew |
| Tony | Derived From Victoria Triumphant. | Male | Latin |
| Tootsie | A girl or young woman. | Unisex | English |
| Trooper | A state or mounted police officer. Also a member of a cavalry unit. | Unisex | English |
| Tucker | Someone who folds cloth | Male | English |
| Twiggy | | Unisex | Hebrew |
| Valentino | Healthy, strong | Male | Italian |
| Whiskey | An alcoholic liquor distilled from grain | Unisex | English |
| Willie | Will, desire and helmet, protection | Male | Germanic |
| Winnie | Blessed peace | Unisex | Welsh |
| Winston | Joy stone | Male | English |
| Wolf | Wolf | Male | English |
| Zeus | Myth Name | Male | Greek |
| Zorro | Means fox in Spanish. | Male | English |