Leonid Nikolaev or Nikolayev may refer to:
- Leonid Nikolayev (pianist) (1878–1942), Russian composer and academic
- Leonid Nikolaev (1904–1934), Russian assassin of Sergei Kirov
- Leonid Nikolaev (conductor) (1940–2009), Russian musicologist and academic
- Leonid Nikolayev (1984–2015), Russian member of dissident art group Voina
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This disambiguation page lists articles about people with the same name.
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