Cognomen Marosin (Marosin 
) , across the world, is a very rare surname. The last name Marosin is characteristic of Malaysia, where it is a very rare surname, Venezuela, and Italy, where it is an extremely rare surname. Not in comparison with a country's population, it is commonest in Malaysia, Brazil, and Italy. Much less frequently, Marosin is the forename as well as the last name.