Mathias Rust (born 1 June 1968) is a German aviator known for his flight that ended with a landing near Red Square in Moscow on 28 May 1987. A teenage amateur pilot, he flew from Helsinki, Finland, to Moscow, being tracked several times by Soviet Air Defence Forces and civilian air traffic controllers, as well as Soviet Air Force interceptor aircraft. The Soviet fighters did not receive permission to shoot him down, and his aeroplane was mistaken for a friendly aircraft several times. He landed on Bolshoy Moskvoretsky Bridge, next to Red Square near the Kremlin in the capital of the Soviet Union.

Rust said he wanted to create an "imaginary bridge" to the East, and that his flight was intended to reduce tension and suspicion between the two Cold War sides.Rust's flight through a supposedly impenetrable air defence system had a great effect on the Soviet military and led to the dismissal of many senior officers, including Minister of Defence Marshal of the Soviet Union Sergei Sokolov and the Commander-in-Chief of the Soviet Air Defence Forces, former World War II fighter ace pilot Chief Marshal Alexander Koldunov. The incident aided Mikhail Gorbachev in the implementation of his reforms, by allowing him to dismiss numerous military officials opposed to his policies. Rust was sentenced to four years in a general-regime labour camp for violation of border crossing and air traffic regulations, and for provoking an emergency situation upon his landing. After 14 months in prison, he was pardoned by Andrei Gromyko, the Chairman of the Presidium of the Supreme Soviet, and released.