| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| SIF | SEEF (Norse Mythology) | Norse Mythology, Danish, Icelandic | ||
| SIGAL | - | Hebrew | ||
| SIGALIT | - | Hebrew | ||
| SIGDAG | - | Ancient Germanic | ||
| SIGEBERHT | - | Anglo-Saxon | ||
| SIGEWEARD | - | Anglo-Saxon | ||
| SIGFRØÐR | - | Ancient Scandinavian | ||
| SIGFRID (1) | SEEG-freed | Swedish | ||
| SIGFRID (2) | - | Norwegian | ||
| SIGFRIDO | seeg-FREE-do (Italian), seeg-FREE-dho (Spanish) | Italian, Spanish | ||
| SIGGE | - | Swedish | ||
| SIGI | - | German | ||
| SIGIBERT | - | Ancient Germanic | ||
| SIGIFRID | - | Ancient Germanic | ||
| SIGIHARD | - | Ancient Germanic |