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Cognomen Rener (Rener , Ренер , רנר ) , in all the world, is quite a rare family name. The cognomen Rener is habitual in Slovenia, where it is quite a rare surname, Nicaragua, and Uruguay, where it is a rare surname. Not in comparison with a country's population, the name is most common in the United States, Slovenia, and Brazil. Also, Rener is the forename as well as the last name.