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Cognomen Dumar (Dumar , دومار) , around the globe, is quite a rare surname. The cognomen Dumar is characteristic of Mauritania, where it is quite a rare surname, Colombia, and Venezuela, where it is a rare surname. Measured by absolute frequency, this name is the most popular in Colombia, India, and the United States. More frequently, Dumar is the forename as well as the last name.