Surname Kujin (Kujin 
, Кужин 
) , around the globe, is a rare cognomen. The family name Kujin is characteristic of Kazakhstan, where it is a rare surname, Russia, and Belarus, where it is a very rare surname. In absolute terms, the name is most common in Russia, Kazakhstan, and Indonesia. Very seldom, Kujin is the forename as well as the last name.