Yan Dongsheng (Chinese: 严东生; 10 February 1918 – 18 September 2016), also known as Tung-sheng Yen or T. S. Yen, was a Chinese inorganic chemist and material scientist. He was a fellow of the Chinese Academy of Sciences and the Chinese Academy of Engineering. He was a member of the Chinese Communist Party and Jiu San Society. He was a Standing Committee member of the 6th and 7th Chinese People's Political Consultative Conference.