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Last name רוח (Ruach , Ruah , רוח ) , throughout the world, is quite a rare cognomen. The family name רוח is characteristic of Israel, where it is quite a rare surname, Portugal, and Sudan, where it is a rare surname. Measured by absolute frequency, the name is most common in Israel, Sudan, and Indonesia. Very seldom, רוח is the forename as well as the last name.