Vadim Abramovich Sidur (; 28 January 1924, Yekaterinoslav - 26 June 1986, Moscow) was a Russian avant-garde sculptor and artist sometimes referred as the Soviet Henry Moore. Sidur is the creator of a style named Grob-Art (Coffin-Art). He also left a book of poetry The Happiest Autumn (Самая Счастливая Осень) and a memoir Monuments to the Current State (Памятники Современному Состоянию).