Family name Dubun (Dubun 
) , all around the world, is a very rare cognomen. The cognomen Dubun is characteristic of France, where it is a rare surname, Honduras, where it is a very rare surname, and Argentina, where it is an extremely rare surname. Not in comparison with a country's population, it is commonest in France, Nigeria, and Philippines. Very seldom, Dubun is the forename as well as the last name.