Family name Вас (Vas 
, Вас 
, Waś 
) , across the world, is a common last name. The surname Вас is characteristic of Hungary, where it is quite a common surname, United Arab Emirates, where it is quite a rare surname, and Romania. Measured by absolute frequency, it is the most numerous in Hungary, India, and Romania. Much less frequently, Вас is the forename as well as the last name.