Family name Юин (Yuin 
, Юин 
) , in the world, is quite a rare last name. The cognomen Юин is habitual in South-eastern Asia, particularly Malaysia, where it is quite a rare surname, Singapore, where it is a rare surname, and Myanmar. Not in comparison with a country's population, it is the most numerous in South-eastern Asia, particularly Malaysia, Myanmar, and Thailand. Very seldom, Юин is the forename as well as the last name.