Leonid Nikolaev (disambiguation)

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