| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| SIEGFRIED | ZEEK-freet (German) | German, Germanic Mythology | ||
| SIEGHARD | ZEEK-hahrt | German | ||
| SIEGHILD | - | German | ||
| SIEGLINDE | - | German, Germanic Mythology | ||
| SIEGMUND | ZEEK-muwnt | German | ||
| SIEGWARD | - | German | ||
| SIEM | SEEM | Dutch | ||
| SIEMEN | SEE-mən (Dutch) | Dutch, Frisian | ||
| SIEMOWIT | - | Polish (Archaic) | ||
| SIENA | see-EN-ə | English (Modern) | ||
| SIENNA | see-EN-ə | English (Modern) | ||
| SIERRA | see-ER-ə | English (Modern) | ||
| SIET | SEET | Frisian | ||
| SIETSE | SEET-sə | Frisian | ||
| SIEUWERD | SOO-ərt | Dutch |