Last name روسين (Rosin 
, Rossin , Rosén 
) , globally, is a common cognomen. The last name روسين is characteristic of Estonia, where it is a common surname, Sweden, where it is quite a common surname, and Italy, where it is quite a rare surname. Not in comparison with a country's population, it is the most numerous in Sweden, Germany, and Italy. Much less frequently, روسين is the forename as well as the last name.