Cognomen Dughan (Dughan 
) , in all the world, is a rare last name. The family name Dughan is characteristic of Ghana, where it is a rare surname, the United Kingdom, where it is a very rare surname, and Germany, where it is an extremely rare surname. Measured by absolute frequency, it is the most numerous in Ghana, the United Kingdom, and India. Very seldom, Dughan is the forename as well as the last name.