Sergey Vasilyevich Aydarov (Russian: Сергей Васильевич Айдаров, born Vishnevsky, Вишневский, 20 October 1867, Moscow, Imperial Russia, — 16 August 1938, Moscow, USSR) was a Russian and Soviet stage actor and theatre director, associated with the Moscow's Maly Theatre where he debuted in 1898. His most acclaimed parts were those in the plays by Alexander Ostrovsky (Krutitsky in Enough Stupidity in Every Wise Man, Vyshnevsky in A Profitable Position, Berendey in The Snow Maiden, Ivan Grozny in Vasilisa Melentyeva, Dulebov in Talents and Admirers), as well in Julius Caesar and The Tempest by William Shakespeare.