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, Ecuador, Spain, India, United States |
| Vajas | India, Romania, United States, Slovakia, Hungary |
| Vaias | Brazil, India, Greece, United States, Hungary |
| Ваяс | Russia, Ukraine |