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Cognomen Rappa (Rapata , Rappa , Раппа ) , all over the world, is quite a rare last name. The surname Rappa is characteristic of Italy, where it is quite a rare surname, New Zealand, and Greece, where it is a rare surname. Measured by absolute frequency, the name is most common in Italy, the United States, and India. Much less frequently, Rappa is the forename as well as the last name.