Yuri Martynov (17 April 1957–1 March 2025) was a Soviet and Russian composer, arranger, journalist, and producer. He was born in Artemovsk and was the younger brother of composer and singer Yevgeny Martynov. In 2003, he was named an Honored Artist of the Russian Federation.
Martynov studied piano at the Artemovsk State Music College and composition at the Moscow State Tchaikovsky Conservatory, graduating in 1982. While a student, he won two All-Union competitions for young composers. After graduating, he completed compulsory service as a performer and arranger-orchestrator with the Academic Song and Dance Ensemble of the USSR Ministry of Internal Affairs' Internal Troops.
His work ranged from symphonies, sonatas, chamber and vocal-choral pieces to film music, popular songs, and pieces for variety orchestras. His compositions were performed by the Moscow Philharmonic State Symphony Orchestra and the Grand Children's Choir of Radio and Television under Viktor Popov, as well as singers including Lyudmila Zykina, Yevgeny Martynov, Alexander Serov, Nikolai Karachentsov, and Philipp Kirkorov. His poetry collaborators included Andrei Dementyev, Robert Rozhdestvensky, and Yuri Garin. He joined the USSR Composers' Union in 1987.
In 1993, Martynov founded and led the Yevgeny Martynov Club, which pursued creative and charitable work. He also wrote several books about his brother's life and work. Martynov died on 1 March 2025 after a long illness.