Robert Lucas (born Robert Ehrenzweig, 8 May 1904 – 19 January 1984) was an Austrian Jewish writer. Lucas studied chemistry and physics at the Vienna University of Technology and University of Vienna. He worked later as an author for the socialdemocratic publisher and was writing political cabarets. In 1931 he wrote the opening ceremony "Das Große Festspiel" for the 1931 Workers' Olympiad in Vienna. His 1972 biography of Frieda Lawrence was translated into English by Geoffrey Skelton.