Kornilov (Russian: Корни́лов) and Kornilova (feminine; Корни́лова) is a common Russian surname derived from the baptismal name Kornil (Latin: Cornelius).
People with this surname include:
- Alexander Kornilov (senator) (1801–1856), Russian governor and senator
- Alexander Alexandrovich Kornilov (1862-1925), Russian historian and liberal politician
- Alexander Alexeyevich Kornilov, contemporary Russian historian
- Alexander Kornilov (rower)
- Boris Petrovich Kornilov (1907-1938), Soviet poet
- Denis Kornilov (b. 1986), Russian ski jumper
- Ivan Alekseyevich Kornilov (1899-1953), Soviet general
- Ivan Petrovich Kornilov (1811-1901), Russian historian and educator
- Konstantin Nikolayevich Kornilov (1879-1957), Russian psychologist
- Lavr Kornilov (1870-1918), Russian general and one of the leaders of the White Movement
- Lev Kornilov (b. 1984), Russian professional footballer
- Pyotr Yevgenyevich Kornilov (1896-?), Russian art historian
- Vladimir Alexeyevich Kornilov (1806-54), Russian admiral, killed during the Battle of Malakoff
- Vladimir Nikolayevich Kornilov (b. 1928), Russian poet and fiction writer
- Yevgeny Alexeyevich Kornilov (b. 1940), Russian historian and media researcher