Cognomen Ваяс (Vayas 
, Vajas 
, Vaias 
) , in the entire world, is quite a rare family name. The last name Ваяс is habitual in Eastern Europe, particularly Hungary, where it is quite a rare surname, Slovakia, and Romania, where it is a rare surname. In absolute terms, it most frequently occurs in India, Hungary, and Romania. Also, Ваяс is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Vayas | Brazil, Spain, United States, India, Ecuador |
| Vajas | Hungary, United States, Slovakia, India, Romania |
| Vaias | Hungary, Greece, Brazil, United States, India |
| Ваяс | Ukraine, Russia |