Family name ジウン (Jieun 
, ジウン ) , in the entire world, is quite a common cognomen. The cognomen ジウン is habitual in South Korea, where it is quite a common surname, Japan, where it is a rare surname, and Malaysia. Not in comparison with a country's population, it is the most numerous in Eastern Asia, particularly South Korea, Japan, and China. Very seldom, ジウン is the forename as well as the last name.