Nikolai Girshevich Kapustin (Russian: Никола́й Ги́ршевич Капу́стин; November 22, 1937 – July 2, 2020) was a Ukrainian 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, and concert studies.