Albert Mikhailovich Demchenko (Russian: Альберт Михайлович Демченко; born 27 November 1971) is a Russian luger who has competed since 1992. A seven-time Winter Olympian, he finally won his first medal at the 2006 Winter Olympics in Turin with a silver in the men's singles event. He competed in his sixth Olympics at the 2010 Winter Olympics, coming fourth. At the 2014 Winter Olympics in Sochi, he won silver medals in the men's singles and in the team relay.
Demchenko also won eight medals at the FIL European Luge Championships with four golds (Men's singles: 2006, 2010; Mixed team: 2012, 2014), two silvers (Men's singles: 1996, 2008), and two bronzes (Men's doubles: 1996; Mixed team: 2013).
He was overall Luge World Cup champion in men's singles in 2004–2005.