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Family name Triệu (Trieu , Triệu , تشاو) , around the globe, is a common cognomen. The last name Triệu is habitual in Macao, where it is quite a common surname, Vietnam, and Australia, where it is quite a rare surname. Measured by absolute frequency, it most frequently occurs in Vietnam, the United States, and Canada. Likewise, Triệu is the forename as well as the last name.