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Cognomen Diaga (Diaga ) , all around the world, is quite a rare last name. The family name Diaga is habitual in Senegal, where it is quite a rare surname, Philippines, where it is a rare surname, and France, where it is a very rare surname. In absolute terms, it is commonest in Senegal, Philippines, and Indonesia. Likewise, Diaga is the forename as well as the last name.