Sergey Aleksandrovich Belousov (; born 4 May 1990) is a Russian association football midfielder. He plays for FC Yelets.
Belousov made his professional debut for Saturn on 15 July 2009 in the Russian Cup game against FC Luch-Energiya Vladivostok. In the 2009 summer transfer window, he moved to Russian Second Division's Zhemchuzhina-Sochi on loan until the end of the season.
A product of FC Yelets's youth football system, Belousov has played in the Russian Premier League with FC Saturn and FC Rostov.