Surname Filberth (Filberth 
) , worldwide, is a rare family name. The last name Filberth is characteristic of Tanzania, where it is a rare surname, Nicaragua, where it is a very rare surname, and the United States, where it is an extremely rare surname. More frequently, Filberth is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Filberth | Tanzania, Philippines, Nicaragua, Brazil, United States |