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Cognomen Dieni (Dieni ) , in all the world, is quite a rare family name. The cognomen Dieni is characteristic of Burkina Faso, where it is quite a rare surname, Italy, and Argentina, where it is a rare surname. In absolute terms, it is commonest in Italy, Burkina Faso, and Indonesia. Likewise, Dieni is the forename as well as the last name.