| Name | Meaning | Gender | Origin |
|---|
| Stormy | | Female | |
| Strike | | Unisex | Hebrew |
| Styx | from Greek mythology, the river that formed the boundary between earth and the underworld | Unisex | |
| Sugar | A sweet powder from sugar cane. Slang for sweetheart. | Female | Literary |
| Sugar | A sweet powder from sugar cane. Slang for sweetheart. | Female | Literary |
| Sugar Bear | | Unisex | Hebrew |
| Sugarbaker | | Unisex | Hebrew |
| Sugarfoot | | Unisex | Hebrew |
| Suk | | Unisex | Hebrew |
| Sultana | | Unisex | |
| Summer | summer season | Female | Word |
| Sunshine | Rays from the sun. Cheerfulness | Female | Word |
| Survivor | | Unisex | Hebrew |
| 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 |
| Susanne | Lily. Variant of Hebrew Susannah. 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 | |
| Suzanne | Lily Variant of Hebrew Susannah. 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 | |
| Suzy | Lily | Unisex | English |
| Sweet Pea | | Female | |
| Sweetie Pie | | Unisex | |
| Sweets | | Unisex | Hebrew |
| Sylar | | Unisex | |
| Taco | A folded fried tortilla filled with meat, cheese and spices. | Unisex | |
| Taina | | Female | |
| Talia | Dew of heaven
| Female | Hebrew |
| Talia | Dew of heaven
| Female | Hebrew |