| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Sirvart | - | Armenian | ||
| Sissie | SIS-ee | English | ||
| Sissinnguaq | - | Native American, Greenlandic | ||
| Sissy | SIS-ee | English | ||
| Siward | - | Ancient Germanic | ||
| Sixte | - | French | ||
| Sixtine | - | French | ||
| Sky | SKIE | English (Modern) | ||
| Skye | SKIE | English (Modern) | ||
| Skylar | SKIE-lər | English (Modern) | ||
| Skyler | SKIE-lər | English (Modern) | ||
| Slade | SLAYD | English (Modern) | ||
| Slava | - | Russian, Slovene, Croatian | ||
| Slavica | - | Serbian, Croatian, Slovene, Macedonian | ||
| Slavka | - | Slovene, Croatian |