Sergei Ovchinnikov, Russian volleyball player and coach (d. 2012)
Sergei Anatolyevich Ovchinnikov (Russian: Серге́й Анатольевич Овчинников; 25 January 1969 – 29 August 2012) was the head coach of the Russia's National Women Volleyball Team. He committed suicide three weeks after the team lost to Brazil at the 2012 Summer Olympics quarterfinals.