Family name Диагана (Diagana 
, Диагана) , in the world, is quite a common surname. The cognomen Диагана is habitual in Sub-Saharan Africa, particularly Mauritania, where it is quite a common surname, Senegal, and Mali, where it is a rare surname. Not in comparison with a country's population, it most frequently occurs in Sub-Saharan Africa, particularly Mauritania, Senegal, and the Democratic Republic of the Congo. Very seldom, Диагана is the forename as well as the last name.