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Surname تدین (Tadayyon , تدین ) , across the world, is a rare last name. The family name تدین is characteristic of Bahrain, where it is quite a rare surname, Iran, where it is a rare surname, and Norway, where it is a very rare surname. Not in comparison with a country's population, it is the most numerous in Iran, Bahrain, and the United Kingdom. Very seldom, تدین is the forename as well as the last name.