Cognomen Gučin (Гучин 
, Gučin 
) , around the globe, is a very rare surname. The surname Gučin is characteristic of Croatia, where it is a rare surname, Russia, where it is a very rare surname, and Kazakhstan. In absolute terms, it is commonest in Russia, Croatia, and Ukraine. Very seldom, Gučin is the forename as well as the last name.