Surname וטר (Vetter 
, וטר 
) , in the entire world, is a common last name. The cognomen וטר is habitual in Western Europe, particularly Germany, where it is quite a common surname, Switzerland, and Austria, where it is quite a rare surname. Measured by absolute frequency, it most frequently occurs in Germany, the United States, and Switzerland. Very seldom, וטר is the forename as well as the last name.