Oleg Nikolayevich Karavaichuk (; December 28, 1927 – June 13, 2016) was a Soviet and Russian composer, author of music for many movies and theater performances. He was born in Kiev. Karavaychuk worked with Sergei Parajanov, Vasily Shukshin, Ilya Averbakh, Kira Muratova ("Brief Encounters", "The Long Goodbye") and others. Karavaychuk also worked with the avant-garde, in particular Sergey Kuryokhin.