Family name Filver (Filver 
) , in the world, is a very rare cognomen. The family name Filver is habitual in Spain, where it is a very rare surname, Peru, where it is an extremely rare surname, and Venezuela. Measured by absolute frequency, it is commonest in Spain, Peru, and the United States. More prevalently, Filver is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Filver | Peru, Bolivia, Switzerland, Philippines, Spain |