Yoshinori Ohsumi (大隅 良典, Ōsumi Yoshinori, born February 9, 1945) is a Japanese cell biologist specializing in autophagy, the process that cells use to destroy and recycle cellular components.

In 1996, he moved to the National Institute for Basic Biology, Japan in Okazaki City, where he was appointed as a professor.

[5] Christian de Duve coined the term autophagy in 1963 whereas Ohsumi began his work in 1988.

[7][8] In 2016, he was awarded the Nobel Prize in Physiology or Medicine "for his discoveries of mechanisms for autophagy".

[11] Ohsumi's spouse Mariko, a Professor of Teikyo University of Science, collaborated on his research.