Sergei Korolev was a Soviet rocket engineer and spacecraft designer.

Sergei Korolev may also refer to:

Sergei Alexandrovich Korolev (1874–1932), Russian microbiologist who founded industrial microbiology Sergei B. Korolev (born 1962), Russian intelligence officer Soviet ship Akademik Sergey Korolyov, a Soviet tracking ship

See also Korolyov (disambiguation)