Yevgeny Alexandrovich Dementyev is a Russian cross-country skier. He attended Children and Youth Sports School of Sovetsky District, Khanty–Mansi Autonomous Okrug, where his first trainer was Valery Ukhov. Dementyev's first international success was in 2001 at the Junior World Championship. He won two medals at the 2006 Winter Olympics in Turin, with a gold in the men's 15 km + 15 km pursuit event and a silver in the men's 50 km freestyle mass start.