Last name Яваш (Yavas 
, Яваш 
) , in the world, is quite a rare family name. The family name Яваш is characteristic of Belgium, where it is quite a rare surname, Austria, and Turkey, where it is a rare surname. Not in comparison with a country's population, it is the most numerous in Turkey, Germany, and Belgium. Very seldom, Яваш is the forename as well as the last name.