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Family name Kontan (Content , Kontan , Conter ) , in the entire world, is quite a common last name. The family name Kontan is characteristic of Luxembourg, where it is quite a common surname, Trinidad and Tobago, where it is quite a rare surname, and Belgium. Measured by absolute frequency, this name is the most popular in France, the United States, and Canada. Much less frequently, Kontan is the forename as well as the last name.