Sergei Kruglov

Sergei Kruglov may refer to:


 * Sergey Kruglov (bobsleigh) (born 1960), Russian Olympic bobsledder
 * Sergei Kruglov (politician) (1907–1977), Soviet politician
 * Sergei Kruglov (poet) (born 1966), Russian poet
 * Sergei Kruglov (sport shooter) (born 1985), Russian Olympic sport shooter