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Family name Keifer (Keifer
, קיפר
, Кифер
) , worldwide, is quite a rare last name. The surname Keifer is characteristic of Israel, where it is quite a rare surname, Kazakhstan, where it is a rare surname, and the United States. In absolute terms, it is commonest in the United States, Kazakhstan, and Germany. Much less frequently, Keifer is the forename as well as the last name.