Last name Виалий (Vialy 
, Виалий 
, Vialiy 
) , globally, is a rare surname. The cognomen Виалий is habitual in France, where it is a rare surname, Indonesia, where it is a very rare surname, and Honduras. Not in comparison with a country's population, it most frequently occurs in Indonesia, France, and Mexico. More frequently, Виалий is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Vialy | Mexico, Indonesia, United States, Democratic Republic of the Congo, France |
| Виалий | Georgia, Kazakhstan, Ukraine, Russia |
| Vialiy | India, United States, Ukraine |