| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Sextus | SEKS-tuws | Ancient Roman | ||
| Sharru-Kinu | - | Ancient Near Eastern | ||
| Sigdag | - | Ancient Germanic | ||
| SigfrØ&Eth;R | - | Ancient Scandinavian | ||
| Sigibert | - | Ancient Germanic | ||
| Sigifrid | - | Ancient Germanic | ||
| Sigihard | - | Ancient Germanic | ||
| Sigiheri | - | Ancient Germanic | ||
| Sigihild | - | Ancient Germanic | ||
| Sigilind | - | Ancient Germanic | ||
| Sigimund | - | Ancient Germanic | ||
| Sigismund | - | German, Ancient Germanic | ||
| Sigivald | - | Ancient Germanic | ||
| Sigiward | - | Ancient Germanic | ||
| Sigmundr | - | Ancient Scandinavian |