Nikolai Girshevich Kapustin (Russian: Никола́й Ги́ршевич Капу́стин; November 22, 1937 – July 2, 2020) was a Russian composer and pianist. He was born in Horlivka, Ukrainian SSR. His works are 20 piano sonatas, six piano concerti, other instrumental concert, sets of piano variations, études and concert studies.