Igor Borisovich Dmitriev (Russian: И́горь Бори́сович Дми́триев) (29 May 1927 – 26 January 2008) was a Soviet and Russian film and theatre actor who specialized in playing aristocratic characters in costume productions (e.g., Rosencrantz in Grigori Kozintsev's Hamlet).

In 1948 he graduated from the Studio of the Moscow Art Theatre and in 1949 became an actor of the Vera Komissarzhevskaya Theater of Drama in Leningrad.

Dmitriev worked with Georgi Tovstonogov, Sergei Gerasimov, Yan Frid.

He acted in more than 120 films, not only in the Soviet Union, but also in Hungary, Poland, East Germany, the United States, Morocco and Algeria.

He also worked as a radio narrator, being one of the first actors to do so, he recited the novels of Leo Tolstoy, Theodore Dreiser, Guy de Maupassant, Émile Zola, Anton Chekhov and many others.