Peng Yuxing (Chinese: 彭宇行; born November 1962) is a Chinese chemist and former politician. He served as President of the Chengdu Institute of Organic Chemistry and Vice President of the Chengdu branch of the Chinese Academy of Sciences. After entering politics, he served as Party Secretary of the cities Neijiang and Mianyang, and became Vice Governor of Sichuan province in 2017. In April 2019, he came under investigation by China's anti-graft agencies and was stripped of his government posts. He was expelled from the Chinese Communist Party in October 2019.