Family name Демир (Demir 
, Демир 
, Demyr 
) , all around the world, is a common last name. The cognomen Демир is characteristic of Turkey, where it is quite a common surname, Bosnia and Herzegovina, and North Macedonia (explore the name in all countries). Not in comparison with a country's population, the name is most common in Turkey, Germany, and France. Very seldom, Демир is the forename as well as the last name.