Nikolai Smirnov
Nikolai Smirnov may refer to:
- Nikolay Smirnov (admiral), Soviet Navy Admiral, Hero of the Soviet Union
- Nikolai Mikhailovich Smirnov, Governor of the Saint Petersburg Governorate, 1855–1861
- Nikolai Smirnov (cinematographer), Soviet film cinematographer that shot Aerograd
- Nikolai Smirnov (water polo), Soviet water polo player who participated in the 1988 Olympics
- Nikolai Smirnov (mathematician), Soviet mathematician