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Cognomen Renberg (Renberg
, Ренберг
) , all over the world, is quite a rare last name. The last name Renberg is habitual in Northern Europe, particularly Sweden, where it is quite a rare surname, Norway, and Denmark, where it is a rare surname. Measured by absolute frequency, it is commonest in Sweden, the United States, and Norway. Much less frequently, Renberg is the forename as well as the last name.