(b Hamburg, Sept 14, 1876; d Pansdorf, nr Lübeck, May 13, 1954).
German painter, printmaker, poster and stage designer. He attended the Kunstgewerbeschule in Hamburg (c. 1894), and art academies in Düsseldorf and Berlin (c. 1897). In the first decades of the 20th century he exhibited with the New Secessionists. He drew and painted still-lifes and figures in landscapes and interiors in a strongly Expressionist style, which revealed his admiration for Cubism and for the work of Ferdinand Hodler. He was an assiduous worker; besides paintings, woodcuts and lithographs, he designed stained-glass windows, mosaics (e.g. Kaiser Wilhelm-Gedächtniskirche, Berlin), murals and painted ceilings. He also decorated the interiors of a number of Berlin theatres, as well as the Marmorhaus cinema (1913). Klein and Gerhard Marcks joined Gropius to organize the 1914 Deutscher Werkbund exhibition in Cologne.
In the post-World War I ferment of cultural and political activity, Klein, with Max Pechstein and others, founded the Novembergruppe in Berlin in ...