Sergey Valentinovich Novikov (Russian: ?????´? ???????????? ???????, Belarusian: ?????? ???????????? ??????? — Siarhei Valiancinavich Novikau; born 27 April 1979) is a retired Belarusian biathlete.
He competed at the 2006, 2010 and 2014 Olympics in four-five events at each Games: 10 km sprint, 12.5 km pursuit, 15 km mass start, 20 km race and 4 × 7.5 km relay.
He won a silver medal, shared with Ole Einar Bjørndalen, in the 20 km individual race in 2010.Novikov retired from the sport at the end of the 2013-14 season.