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Cognomen Рэу (Reu , Rehu , Reou ) , in the world, is quite a rare family name. The family name Рэу is characteristic of Israel, where it is quite a rare surname, Belgium, and Papua New Guinea. Not in comparison with a country's population, it is commonest in South Korea, Israel, and Germany. Also, Рэу is the forename as well as the last name.