Family name Dioba (Dioba 
) , worldwide, is a rare cognomen. The cognomen Dioba is characteristic of Gabon, where it is quite a rare surname, the Democratic Republic of the Congo, where it is a rare surname, and Philippines, where it is a very rare surname. Not in comparison with a country's population, it is commonest in Gabon, the Democratic Republic of the Congo, and Indonesia. Likewise, Dioba is the forename as well as the last name.