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Cognomen Greyner (Greyner , Грейнер ) , in the entire world, is a rare surname. The cognomen Greyner is habitual in Nicaragua, where it is a rare surname, Venezuela, and Belarus, where it is a very rare surname. Measured by absolute frequency, the name is most common in Russia, Venezuela, and Ukraine. Much less frequently, Greyner is the forename as well as the last name.