Symphony No. 12 in D minor, Op. 112, subtitled The Year 1917, was composed by Dmitri Shostakovich in 1961. He dedicated it to the memory of Vladimir Lenin. Although the performance on October 1, 1961, by the Leningrad Philharmonic Orchestra conducted by Yevgeny Mravinsky was billed as the official premiere, the actual first performance took place two hours earlier that same day in Kuybyshev by the Kuybyshev State Philharmonic Orchestra conducted by Abram Stasevich.

Dmitri Dmitriyevich Shostakovich was a Soviet-era Russian composer and pianist who became internationally known after the premiere of his First Symphony in 1926 and thereafter was regarded as a major composer.