Sergey Aleksandrovich Yung (Russian: Серге́й Александрович Юнг; born 10 August 1955) is a Russian former race walker who competed for the Soviet Union.

Yung set his personal best of 3:47:16 hours for the event in Moscow in 1982.

[1] He competed at the 1982 European Athletics Championships and placed tenth overall.

He began with the silver medal at the 1983 IAAF World Race Walking Cup, finishing behind Mexico's Raúl González.

[4] The first World Championships in Athletics was held in Helsinki later that year and Yung was the bronze medallist there, beaten only by Ronald Weigel and José Marín.