Family name ويدر (Weider 
, Wieder 
, ويدر) , in the world, is quite a common surname. The family name ويدر is habitual in Israel, where it is quite a rare surname, Austria, and Germany. Measured by absolute frequency, the name is most common in Germany, the United States, and France. Very seldom, ويدر is the forename as well as the last name.