Jenia Grebennikov (born 13 August 1990) is a French professional volleyball player of Russian descent who plays as a libero for Zenit Saint Petersburg and the France national team.

Grebennikov won a gold medal in the men's tournament at the Olympic Games Tokyo 2020 and is the 2015 European Champion.

His father Boris Grebennikov is a former Soviet and Kazakh volleyball player and coach.

[2] In April 2015, he signed a contract with the Italian team, Cucine Lube Civitanova.

[6] On 18 October 2015 the French national team, including Grebennikov, achieved the title of the European Champion 2015 (3–0 with Slovenia in the finale).