Sergey Rubtsov (born 4 September 1965 in Russian SFSR) is a retired Kazakhstani athlete specializing in the shot put. He twice represented his country at the Olympic Games, in 1996 and 2000 without reaching the final round. He was born in the Russian SSR of the Soviet Union.^[1]

His personal bests are 20.49 metres outdoors and 20.47 metres indoors, both from 1992 and standing national records.