| Name | Meaning | Gender | Origin |
|---|
| Sky | Sky | Unisex | Norse |
| Slate | | Unisex | Hebrew |
| Smokey | A grayish blue colour. Slang for highway patrol officer | Unisex | English |
| Snowball | | Unisex | Hebrew |
| Spidey | | Unisex | Hebrew |
| Spirit | Part of the human being associated with the mind. Vigorous or animated state - spirited. Also distilled alcohol. | Unisex | English |
| Sprite | Lemonade flavored soft drink. | Unisex | English |
| Stormy | Violent weather | Unisex | English |
| Tahoe | Edge of the lake | Unisex | Native American |
| Tango | | Unisex | Hebrew |
| Tank | A large metal container. A heavily armed combat vehicle | Unisex | English |
| Thunder | Stormy Tempered | Unisex | English |
| Tiger | Tiger | Unisex | English |
| Timber | Wood used as a building material. Also timber-wolf. | Unisex | English |
| Trace | Thracius' place | Unisex | English |
| Trigger | | Unisex | Hebrew |
| Tuvok | After the vulcan character on the Star Trek Voyager tv series | Unisex | English |
| Whisper | | Unisex | Hebrew |
| Wonder | | Unisex | Hebrew |