| SIGRID | | SEEG-reed (Finnish) | Norwegian, Swedish, Danish, Estonian, Finnish (Archaic) | |
| SIGRUN | | - | Swedish, Norwegian, Danish | |
| SIGSTEINN | | - | Ancient Scandinavian | |
| SIGURÐR | | - | Ancient Scandinavian, Norse Mythology | |
| SIGURÐUR | | - | Icelandic | |
| SIGURD | | SEE-gurd (Swedish) | Norwegian, Danish, Swedish, Norse Mythology | |
| SIGVARD | | - | Swedish | |
| SIIRI | | SEE:-ree (Finnish) | Estonian, Finnish | |
| SIKANDAR | | - | Urdu, Pashto | |
| SIKKE | | SIK-kə | Frisian | |
| SILA | | - | Turkish | |
| Silas | | ['sailəs] | | |
| SILAS | | SIE-ləs (English) | English, Greek, Biblical, Biblical Latin, Biblical Greek | |
| SILJA | | SEEL-yah | Finnish | |
| SILJE | | - | Norwegian, Danish | |