Last name ويدير (Weder 
, Wyder 
, Widder 
) , all over the world, is quite a common family name. The cognomen ويدير is habitual in Western Europe, particularly Switzerland, where it is quite a common surname, Liechtenstein, and Austria, where it is quite a rare surname. In absolute terms, it most frequently occurs in Switzerland, Germany, and the United States. Also, ويدير is the forename as well as the last name.