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Family name Janah (Janah , Джана , ג'נאח ) , in all the world, is a common cognomen. The last name Janah is characteristic of Morocco, where it is quite a common surname, Indonesia, where it is quite a rare surname, and Brunei. In absolute terms, it most frequently occurs in Indonesia, Morocco, and Pakistan. Much less frequently, Janah is the forename as well as the last name.