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Cognomen Diouf (Diouf , ضيوف , Диуф ) , all over the world, is a widespread family name. The family name Diouf is characteristic of Sub-Saharan Africa, particularly Senegal, where it is a prevalent surname, Gabon, where it is quite a common surname, and Gambia. Measured by absolute frequency, it most frequently occurs in Senegal, France, and Ivory Coast. Very seldom, Diouf is the forename as well as the last name.