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Family name Yien (Yien , 义恩 , เยียน ) , around the world, is quite a common surname. The family name Yien is characteristic of Malaysia, where it is quite a common surname, Singapore, where it is a rare surname, and Sudan. Measured by absolute frequency, the name is most common in Malaysia, China, and Sudan. Much less frequently, Yien is the forename as well as the last name.