Surname Фиал (Fial 
, Фиал 
) , worldwide, is quite a rare last name. The cognomen Фиал is characteristic of Portugal, where it is a rare surname, Netherlands, and Austria. Measured by absolute frequency, this name is the most popular in Philippines, Indonesia, and the United States. Much less frequently, Фиал is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Fial | Indonesia, Philippines, United States, Poland, Brazil |
| Фиал | Kazakhstan, Russia |