Aleksandr Demyanenko was a Soviet and Russian theater and film actor. Honored Artist of the RSFSR (26.11.1965). People's Artist of the RSFSR (1991). One of the most popular Soviet film actors. Among most of his characters are sweet eccentrics and noble intellectuals. A.S. Demyanenko was the creator of the mask-image of Shurik, the cheerful, slightly clumsy student of the 1960s in the films of director Leonid Gaidai. A master of dubbing and voice-over for films. In 1959 he graduated from the acting faculty of GITIS. In 1959–1961 he was an actor at the Mayakovsky Theater, and after leaving the theater he began working at the Lenfilm film studio.

In 1988–1995 he was an actor at the Akimov Comedy Theater. In 1995–1999 he was an actor at the Priyut Komedianta theater. The actor was buried on August 26 at the Serafimovskoye Cemetery of the northern capital. Next to his grave is buried his wife, dubbing director Lyudmila Demyanenko (1940–2005). Chapter 69 of Leonid Filatov's cycle "To Be Remembered" is devoted to the actor's life and work.