Sergey Ivanovich Vavilov, Russian physicist and academic (d. 1951)

Sergey Ivanovich Vavilov (Russian: Серге́й Ива́нович Вави́лов (24 March [O.S. 12 March] 1891 – January 25, 1951) was a Soviet physicist, the President of the Academy of Sciences of the Soviet Union from July 1945 until his death. His elder brother Nikolai Vavilov was a famous Russian geneticist.