Last name Мерджан (Mercan 
, Мерджан 
, Merdjan 
) , in all the world, is a common cognomen. The surname Мерджан is habitual in Turkey, where it is quite a common surname, North Macedonia, where it is quite a rare surname, and Malta. In absolute terms, this name is the most popular in Turkey, Germany, and Romania. Very seldom, Мерджан is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Mercan | Switzerland, Germany, Turkey, France, Romania |
| Мерджан | Belarus, Ukraine, Russia, Bulgaria |
| Merdjan | North Macedonia, United States, Turkey, France, Indonesia |
| Merdzhan | Bulgaria, United States |