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Last name Tyer (Tyer , 泰尔 , Тьер ) , in all the world, is quite a rare family name. The surname Tyer is characteristic of the United States, where it is a rare surname, New Zealand, and the United Kingdom. Not in comparison with a country's population, it is the most numerous in the United States, the United Kingdom, and India. Very seldom, Tyer is the forename as well as the last name.