Cognomen Diesun (Diez 
, Un 
, Diesun 
) , in all the world, is a common surname. The last name Diesun is characteristic of Macao, where it is a common surname, British Virgin Islands, where it is quite a common surname, and Spain (explore the name in all countries). In absolute terms, this name is the most popular in Spain, Argentina, and Philippines. Likewise, Diesun is the forename as well as the last name.