| Name | Meaning | Gender | Origin |
|---|
| Sagan | | Unisex | Hebrew |
| Sashi | Moonbeam | Unisex | Hindu |
| Saturn | Sixth and second largest planet away from the Sun. | Male | |
| Selena | after the goddess Selene | Female | Latinized |
| Selene | after the Greek godess of the moon | Unisex | |
| Seren | for Serendipidity | Male | Welsh |
| Sirius | burning | Male | Latin |
| Sky | The expanse of air over the Earth | Female | Nature |
| Skye | sky, sheltering | Female | Scottish |
| Solar | | Unisex | Hebrew |
| Star | A celestial body that emits light. A famous performer. | Female | Word |
| Star | A celestial body that emits light. A famous performer. | Female | Word |
| Starr | Star | Female | English |
| Stella | a star | Female | Latin |
| Stella | a star | Female | Latin |
| Sunny | Abounding in sunshine, cheerful | Male | Nickname |
| Sunshine | Rays from the sun. Cheerfulness | Female | Word |
| Sylvia | from the forest | Female | Latin |
| Talia | Dew of heaven
| Female | Hebrew |
| Talia | Dew of heaven
| Female | Hebrew |
| Talitha | third leap | Female | Arabic |
| Tara | A hill where the kings met
| Female | Irish |
| Taurus | bull | Male | Latin |
| Tenshi | | Unisex | |
| Terra | earth | Female | Latin |