| Name | Meaning | Gender | Origin |
|---|
| Sugarplum | | Unisex | Hebrew |
| Suki | beloved | Female | Japanese |
| Sun | obedient | Female | Korean |
| Sunbeam | | Unisex | |
| Sunflower | | Unisex | |
| Sunlight | | Unisex | |
| Sunrays | | Unisex | |
| Sunshine | Rays from the sun. Cheerfulness | Female | Word |
| Susana | 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 | |
| Susanna | lily | 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 | |
| Sushi | Raw fish. | Unisex | |
| Sushi | Raw fish. | Unisex | |
| Susie | Hebrew, lily | Female | English |
| 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 | |
| Suzette | 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 Holly | | Unisex | |
| Sweet Pea | | Female | |
| Sweetie Pie | | Unisex | |
| Swiss | | Unisex | Hebrew |
| Taffi | | Unisex | Hebrew |
| Talcum | | Unisex | |
| Tamashi | | Unisex | |
| Tapioca | Starch used for puddings and as a thickening agent in cooking. | Unisex | |