Li Zhensheng (Chinese: 李振声; pinyin: Lǐ Zhènshēng; born February 25, 1931) is a Chinese geneticist who specializes in the genetics of wheat.

In 1951, he graduated from Shandong Agricultural University and worked in Yangling (Institute of Soil and Water Conservation, Chinese Academy of Sciences, now Northwest A&F University) for over 30 years.

In an interview, he said that three scientists influenced him very much, they are Hua Luogeng (for telling him how to learn), Qian Sanqiang (how to do research) and Ai Siqi (Historical Materialism and Dialectical Materialism).

This has enabled him to propose a creative methodology for producing wheat substitution lines through nullisomic backcrossing.

This kind of breeding needs less natural resources, and it protects the environment which is good for the sustainable development in Chinese agriculture.