Leonid Osipovich Pasternak (Russian: Леонид Осипович Пастернак; born Yitzhok-Leib or Isaak Iosifovich Pasternak; 3 April [O.S. 22 March] 1862 – 31 May 1945) was a Russian painter.[1][2] He was the father of the poet and novelist Boris Pasternak.[3]