Sergey Vladimirovich Kovalenko (; born May 25, 1976 in Shakhty, Rostov Oblast) is an amateur Russian Greco-Roman wrestler, who played for the men's welterweight category. He won a bronze medal for the 66 kg division at the 2006 World Wrestling Championships in Guangzhou, China. He is also a two-time medalist at the European Championships (2005 in Varna, Bulgaria and 2006 in Moscow, Russia), and a member of SKA Saint Petersburg in Saint Petersburg, under his personal coach Grigori Davidyan.