| Name | Meaning | Gender | Origin |
|---|
| Rumor | Hood | Unisex | English |
| Ryder | One who rides | Unisex | English |
| Sage | Aromatic herb | Unisex | English |
| Salem | Secure, peace | Unisex | Arabic |
| Sarge | Noncommissioned Army or Air Force rank | Unisex | English |
| Satin | Amber | Female | Armenian |
| Scarlett | Scarlet | Female | English |
| Scout | Observer | Unisex | American English |
| Season | Sowing, Planting | Female | Latin |
| Seven | Seven | Unisex | American English |
| Shade | Sweetly singing | Unisex | African |
| Sheridan | Long lived treasure | Unisex | Gaelic |
| Slash | | Unisex | Hebrew |
| Sonic | Approaching the speed of sound, fast-paced | Unisex | English |
| Sparrow | A bird | Female | English |
| Sphinx | | Unisex | Hebrew |
| Spider | An eight legged insect | Unisex | English |
| Spirit | Part of the human being associated with the mind. Vigorous or animated state - spirited. Also distilled alcohol. | Unisex | English |
| Stormy | Violent weather | Unisex | English |
| Styx | Myth Name (A River Of The Underworld) | Unisex | English |
| Suki | To like | Female | Japanese |
| Syther | | Unisex | Hebrew |
| Taboo | | Unisex | Hebrew |
| Tank | A large metal container. A heavily armed combat vehicle | Unisex | English |
| Tempest | Storm | Female | English |
| Tequila | An alcoholic liquor distilled from mescal. | Unisex | English |
| Thistle | Thistle | Female | English |
| Thora | Thunder | Female | Norse |
| Titan | Powerful big man | Unisex | Greek |
| Trace | Thracius' place | Unisex | English |