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Cognomen Hamar (Hamar , Hamarr , האמר ) , all around the world, is quite a common family name. The last name Hamar is characteristic of Hungary, where it is quite a common surname, Slovakia, and Bahrain, where it is quite a rare surname. Measured by absolute frequency, it most frequently occurs in Hungary, the United States, and Slovakia. Very seldom, Hamar is the forename as well as the last name.