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Family name Decker (Decker
, דקר
, ديكر
) , in the world, is a common last name. The cognomen Decker is characteristic of Western Europe, particularly Luxembourg, where it is quite a common surname, Germany, and Belgium (explore the name in all countries). In absolute terms, it is commonest in the United States, Germany, and Belgium. Much less frequently, Decker is the forename as well as the last name.