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Surname Kroyer (Kroyer
, Кроер
) , throughout the world, is a rare last name. The last name Kroyer is characteristic of Iceland, where it is quite a common surname, Bosnia and Herzegovina, where it is quite a rare surname, and Austria. Not in comparison with a country's population, it is commonest in the United States, Bosnia and Herzegovina, and Austria. Very seldom, Kroyer is the forename as well as the last name.