| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| 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 | ||
| Simonides | - | Ancient Greek | ||
| Siward | - | Ancient Germanic | ||
| Socrates | SAHK-rə-teez (English) | Ancient Greek (Latinized) | ||
| Sokrates | - | Ancient Greek | ||
| Solon | - | Ancient Greek | ||
| Sophia | so-FEE-ə (English), so-FIE-ə (British English), zo-FEE-ah (German) | English, Greek, German, Ancient Greek |