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Cognomen Rydvan (ردفان , Ридван , Рыдван ) , in the world, is quite a rare surname. The surname Rydvan is habitual in Yemen, where it is quite a rare surname, Czechia, where it is a rare surname, and Belarus. Measured by absolute frequency, it is commonest in Yemen, Saudi Arabia, and Ukraine. More frequently, Rydvan is the forename as well as the last name.