| Name | Meaning | Gender | Origin |
|---|
| Schnapps | Variety of strong liquor usually associated with Holland | 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 |
| Skippy | Master of a Ship | Unisex | American English |
| Slim | Slender in proportion to height. | Unisex | English |
| Socks | Short stockings finishing above the ankle | Unisex | English |
| Sparky | Animated, lively. | Unisex | English |
| Spike | A long, thick sharp-pointed piece of wood or metal | Male | English |
| Squirt | Slang for a small person | Unisex | English |
| Stumpy | A short, thickset person | Unisex | English |
| Suzie | Lily | Unisex | Hebrew |
| Sweetie | Sweetheart. | Unisex | English |
| Swiper | | Unisex | Hebrew |
| Ted | Gift of God | Male | Greek |
| Teddy | Gift of God | Male | Greek |
| Tegan | Beautiful | Male | Welsh |
| Tinkerbell | | Unisex | Hebrew |
| Tiny | Extremely small | Unisex | English |
| Toby | God is good | Unisex | Hebrew |
| Tod | Fox | Male | English |
| Tootsie | A girl or young woman. | Unisex | English |
| Trystan | Tumult | Male | Gaelic |
| Tucker | Someone who folds cloth | Male | English |
| Turbo | Driven by a turbine - turbocharged | Unisex | English |
| Twiggy | | Unisex | Hebrew |
| Waffles | | Unisex | Hebrew |
| Whisper | | Unisex | Hebrew |
| Wicket | | Unisex | Hebrew |