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Surname Hacen (Hacen ) , in the world, is quite a rare cognomen. The cognomen Hacen is characteristic of Mauritania, where it is quite a common surname, Algeria, where it is quite a rare surname, and Tunisia, where it is a rare surname. Not in comparison with a country's population, it most frequently occurs in Algeria, Mauritania, and France. More prevalently, Hacen is the forename as well as the last name.