Sergei Sergeyevich Grishin (; born 18 November 1973) is a Russian professional football coach and a former player.
Grishin played his first game for Russia on 30 April 1997 against Luxembourg in a 1998 FIFA World Cup qualifier, scoring a goal on his debut. He only played two more games for Russia.
His father Sergei Grishin also played football professionally, winning the title in the Soviet Top League in 1976.
In September 2022, Grishin received summons to appear at the military commissariat for potential call-up to the Russian Army during the 2022 Russian mobilization.