Surname كيلر (Keller 
, Keler 
, كيلر 
) , across the world, is a widespread cognomen. The surname كيلر is characteristic of Western Europe, particularly Switzerland, where it is a common surname, Liechtenstein, and Germany, where it is quite a common surname (explore the name in all countries). In absolute terms, the name is most common in the United States, Germany, and Switzerland. Very seldom, كيلر is the forename as well as the last name.