Sergei Semyonov

Sergei Semyonov may refer to:


 * Sergey Semyonov (writer) (1868–1922), Russian writer
 * Serhiy Semenov (born 1988), Ukrainian biathlete
 * Sergey Semenov (wrestler) (born 1995), Russia Greco-Roman wrestler
 * Sergey Semenov (footballer) (born 1985), Ukrainian footballer