Surname Iulin (Iulin 
, Юлин 
) , in the world, is quite a rare family name. The family name Iulin is habitual in Russia, where it is quite a rare surname, Kazakhstan, where it is a rare surname, and Belarus. Not in comparison with a country's population, this name is the most popular in Russia, Kazakhstan, and China. Very seldom, Iulin is the forename as well as the last name.