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Cognomen Rosu (Rosu , Росу , روسو ) , around the world, is a common family name. The surname Rosu is characteristic of Romania, where it is a common surname, Aland Islands, where it is quite a common surname, and Moldova. Not in comparison with a country's population, it most frequently occurs in Romania, Italy, and Moldova. Very seldom, Rosu is the forename as well as the last name.