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Worldwide, Riedel (Riedel , ريدل , Ридель ) is a rare primarily male, but very seldom girly forename. The first name Riedel is characteristic of Angola, where it is a rare male name, Indonesia, where it is a very rare masculine name, and Peru. Measured by absolute frequency, it is the most numerous in Indonesia, Angola, and Germany. Much more prevalently, Riedel is the last name as well as the forename.