Denis Sergeyevich Dmitriev (; born 23 March 1986) is a Russian track cyclist. Specialising in the sprint events, Dmitriev's best result in international sports was winning a gold medal at the 2017 World Championships in Hong Kong. At the 2016 Summer Olympics he succeeded to the bronze medal race in sprint, winning the medal. Dmitriev is a four-time European Champion at senior level in the Sprint event for men, and the most successful sprint cyclist in the competitions's history.