Sergei Nikolayev may refer to: Sergei Nikolayev (footballer) (born 1978), Russian football player Sergei Nikolayev (ice hockey) (born 1972), Russian ice hockey player Sergey Nikolaev (cyclist) (born 1988), Russian cyclist Sergey Nikolayev (shot putter) (born 1966), Russian shot putter Sergei Nikolaev (linguist) (born 1954), Russian linguist