Surname Fiath (Fiath 
) , in the entire world, is a rare family name. The last name Fiath is habitual in Hungary, where it is a rare surname, Nigeria, where it is a very rare surname, and the United States, where it is an extremely rare surname. Also, Fiath is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Fiath | Hungary, South Africa, United States, Democratic Republic of the Congo, Nigeria |