Family name Chujin (楚金 
, Chujin 
, Чужин 
) , globally, is quite a rare cognomen. The surname Chujin is habitual in Japan, where it is a rare surname, Russia, where it is a very rare surname, and Kazakhstan. In absolute terms, this name is the most popular in Japan, Russia, and China. Likewise, Chujin is the forename as well as the last name.