Sergei Viktorovich Zhelanov (Russian: Серге́й Викторович Желанов) (born 14 June 1957 in Aleksin, Tula Oblast) is a Soviet athlete who mainly competed in the Decathlon.

He trained at Dynamo in Moscow.

He competed for the Soviet Union at the 1980 Summer Olympics held in Moscow, Soviet Union where he won the bronze medal in the men's decathlon event.

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