| Name | Meaning | Gender | Origin |
|---|
| Shadow | A rough, dark image cast by an object blocking the sun's rays | Female | English |
| Shady | | Unisex | |
| Shalimar | | Female | |
| Shark | | Unisex | |
| Sheherazade | dweller in cities | Female | Arabic |
| Silver Bay | | Unisex | |
| Silvie | | Unisex | Hebrew |
| Sky | The expanse of air over the Earth | Female | Nature |
| Smoke | | Unisex | |
| Smoke | | Unisex | |
| Smoky | | Unisex | |
| Sombra | Spanish for shadow | Unisex | |
| Sooty | Covered with soot | Unisex | |
| Sparkles | | Unisex | |
| Spirit | Part of the human being associated with the mind. Vigorous or animated state - spirited. Also distilled alcohol. | Female | Word |
| Spooky | | Unisex | |
| Stardust | | Female | |
| Steel Wool | | Unisex | |
| Stoney | Stone-Lie | Unisex | Greek |
| Stormie | | Unisex | |
| Stormy | | Female | |
| Suelita | Little lily
| Female | |
| Susan | Lily Diminutive of Susannah also used as an independent name. In the apocryphal Book of Tobit Susannah courageously defended herself against wrongful accusation. White lilies grew in the Biblical city of Susa in Persia.
| Female | Hebrew |
| Suzie | | Female | |
| Syllable | | Unisex | |