Siew or Siew Wan-chang (Chinese: ???; pinyin: Xiao Wà ncháng; Pe?h-oe-ji: Siau Ban-tiông; born 3 January 1939) is a Taiwanese politician who served as the Vice President of the Republic of China from 2008 to 2012.
He was the first Taiwanese-born Premier of the Republic of China and former vice-chairman of the Kuomintang (KMT).