Mirror (Russian: Зеркало, romanized: Zerkalo) is a 1975 Soviet drama film directed by Andrei Tarkovsky. It is loosely autobiographical, unconventionally structured, and incorporates poems composed and read by the director's father, Arseny Tarkovsky. The film features Margarita Terekhova, Ignat Daniltsev, Alla Demidova, Anatoly Solonitsyn, Tarkovsky's wife Larisa Tarkovskaya and his mother Maria Vishnyakova. Innokenty Smoktunovsky provides voiceover and Eduard Artemyev the incidental music and sound effects.

Mirror is structured in the form of a nonlinear narrative, with its main concept dating back to 1964 and undergoing multiple scripted versions by Tarkovsky and Aleksandr Misharin. It unfolds around memories recalled by a dying poet of key moments in his life and in Soviet culture. The film combines contemporary scenes with childhood memories, dreams, and newsreel footage. Its cinematography slips between color, black-and-white, and sepia. The film's loose flow of oneiric images has been compared with the stream of consciousness technique associated with modernist literature.

Mirror initially polarized critics and audiences, with many finding its narrative incomprehensible. Since its release, it has been reappraised as one of the greatest films of all time, as well as Tarkovsky's magnum opus. It has especially found favor with many Russians, for whom it remains their most beloved of Tarkovsky's works.