| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Sibonakaliso | - | Southern African, Zulu | ||
| Sibylle | zi-BUY-lə (German) | German, French | ||
| Sidonie | - | French | ||
| Sidony | - | English (Archaic) | ||
| Sieger | - | Dutch, German | ||
| Siegfried | ZEEK-freet (German) | German, Germanic Mythology | ||
| Sieglinde | - | German, Germanic Mythology | ||
| Siem | SEEM | Dutch | ||
| Siemen | SEE-mən (Dutch) | Dutch, Frisian | ||
| Siemowit | - | Polish (Archaic) | ||
| Sieuwerd | SOO-ərt | Dutch | ||
| Sif | SEEF (Norse Mythology) | Norse Mythology, Danish, Icelandic | ||
| Sigdag | - | Ancient Germanic | ||
| SigfrØ&Eth;R | - | Ancient Scandinavian | ||
| Sigibert | - | Ancient Germanic |