Surname 유신 (Yushin 
, Yusin 
, 유신 ) , in the entire world, is quite a common family name. The last name 유신 is habitual in Malaysia, where it is quite a rare surname, Taiwan, and Japan, where it is a rare surname. Measured by absolute frequency, it is the most numerous in Malaysia, Japan, and Indonesia. More prevalently, 유신 is the forename as well as the last name.