Cognomen Siuver (Siuver 
) , in the entire world, is an extremely rare last name. The cognomen Siuver is characteristic of Georgia, where it is a very rare surname, and Venezuela, where it is an extremely rare surname. Also, Siuver is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Siuver | Georgia, Venezuela |