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Last name Ростан (Rostand , Rostan , Ростан ) , worldwide, is quite a common cognomen. The cognomen Ростан is characteristic of Cameroon, where it is quite a common surname, Uruguay, where it is quite a rare surname, and France. Not in comparison with a country's population, it is commonest in Cameroon, France, and Argentina. More frequently, Ростан is the forename as well as the last name.