Cognomen Вайсь (Vais 
, Вайсь 
) , globally, is quite a common last name. The cognomen Вайсь is habitual in Czechia, where it is quite a rare surname, Greece, and Estonia. Not in comparison with a country's population, it is the most numerous in India, Brazil, and Czechia. Much less frequently, Вайсь is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Vais | Brazil, France, Pakistan, Czechia, India |
| Вайсь | Russia |