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Surname Weider (Weider , Вейдер , וידר ) , in the world, is quite a rare last name. The last name Weider is characteristic of Isle of Man, where it is quite a rare surname, Israel, and Norway. Not in comparison with a country's population, it is the most numerous in the United States, Germany, and Israel. Likewise, Weider is the forename as well as the last name.