John Erhart Kashdan (12 February 1917 – 22 February 2001) was an English painter, printmaker and teacher of Russian Jewish descent. He studied at the Royal Academy Schools and later exhibited in London and America before withdrawing from exhibiting around 1950 to focus on his teaching career. His work in the 1940s was influenced by Pablo Picasso, Juan Gris and Georges Braque. Post-war influences include Paul Klee and José Guadalupe Posada as well as contemporaries Robert Colquhoun and Robert MacBryde.