Last name Erdjan (Erdjan 
, Ерджан 
, Эрджан 
) , in the entire world, is a rare surname. The surname Erdjan is characteristic of North Macedonia, where it is quite a common surname, Bulgaria, where it is a rare surname, and Belarus, where it is a very rare surname. In absolute terms, it is the most numerous in North Macedonia, Bulgaria, and Russia. Likewise, Erdjan is the forename as well as the last name.