Cognomen Мадер (Mader 
, Sterz 
, Мадер 
) , around the world, is a common surname. The cognomen Мадер is habitual in Western Europe, particularly Switzerland, where it is quite a common surname, Austria, and Germany. In absolute terms, it is the most numerous in Germany, the United States, and Austria. Very seldom, Мадер is the forename as well as the last name.