Cognomen Iulan (Iulan 
, Юлан 
) , all over the world, is a rare family name. The surname Iulan is characteristic of Romania, where it is a rare surname, Georgia, and Spain, where it is a very rare surname. Not in comparison with a country's population, it is the most numerous in Romania, China, and Spain. More prevalently, Iulan is the forename as well as the last name.