György Sándor Ligeti (May 28, 1923 – June 12, 2006) was a composer, born in a Hungarian Jewish family in Transylvania, Romania. He briefly lived in Hungary before later becoming an Austrian citizen. Many of his works are well known in classical music circles, but to the general public, he is best-known for the various pieces featured in the Stanley Kubrick films 2001: A Space Odyssey, The Shining, and Eyes Wide Shut.

Ligeti's music is best-known to the general public for its use in the films of Stanley Kubrick. The soundtrack to 2001: A Space Odyssey includes four of his pieces: Atmosphères, Lux Aeterna (for the moon-bus scene en route to the TMA-1 monolith in the crater Tycho), Requiem (the Kyrie section), and an electronically altered version of Aventures (in the cryptic final scenes). Some of this music was used again in Peter Hyams's 1984 sequel film, 2010. Kubrick's The Shining uses Lontano for orchestra. The second of Ligeti's Musica ricercata is used extensively in Eyes Wide Shut.