Sergey Morozov (born 21 March 1988) is a Russian race walker who competes in the 20 kilometres walk. He was the 2005 World Youth and 2007 European Junior champion in the 10,000 m walk, then walked a world's fastest time of 1:16:43 hours to win the 2008 Russian 20 km title. He was banned that year after testing positive for EPO.