Denis Aleksandrovich Fomin (; born 3 May 1996) is a Russian football defender who plays for Rotor Volgograd.
He made his debut in the Russian Second Division for FC Tekstilshchik Ivanovo on 20 April 2013 in a game against FC Znamya Truda Orekhovo-Zuyevo.
He made his Russian Premier League debut on 7 March 2015 for FC Ural Yekaterinburg in a game against FC Zenit Saint Petersburg.