Cognomen Яух (Jauch 
, Yauch 
, Яух 
) , all over the world, is quite a common family name. The surname Яух is habitual in Switzerland, where it is quite a rare surname, Germany, and Hungary, where it is a rare surname. Not in comparison with a country's population, the name is most common in Germany, the United States, and Switzerland. Very seldom, Яух is the forename as well as the last name.