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Surname Thiery (Thiery , Thiéry , เทียรี่) , across the world, is a common family name. The surname Thiery is habitual in Western Europe, particularly France, where it is quite a common surname, Luxembourg, where it is quite a rare surname, and Belgium. Measured by absolute frequency, the name is most common in France, Germany, and Cameroon. Likewise, Thiery is the forename as well as the last name.