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Cognomen Ruini (瑞妮 , Ruini , روينى) , in the world, is quite a rare surname. The last name Ruini is characteristic of Italy, where it is quite a rare surname, Finland, where it is a rare surname, and Tunisia. Measured by absolute frequency, the name is most common in Italy, China, and France. Likewise, Ruini is the forename as well as the last name.