Chung Tao Yang, or Chung-Tao Yang, Yang Zhongdao (traditional Chinese: 楊忠道; simplified Chinese: 杨忠道; pinyin: Yáng Zhòngdào) (May 4, 1923 – 2005), was a notable Chinese American topologist. He was an academician of the Academia Sinica and served as the chair of the Department of Mathematics, University of Pennsylvania.[1]