Sidney Tillim (June 16, 1925 – August 16, 2001) was an American artist and art critic, known for his maverick painting and independent point of view on modern art in post-war America. Best remembered for his revival of history painting in the 1970s, Tillim alternated between the figurative and the abstract throughout his career. Likewise, although he wrote on a wide range of topics for Artforum and Arts Magazine, he is most identified with supporting representational art when few did.