Oscar Bluemner (June 21, 1867 – January 12, 1938), born Friedrich Julius Oskar Blümner and after 1933 known as Oscar Florianus Bluemner, was a German-born American Modernist painter.
Bluemner was born as Friedrich Julius Oskar Blümner in Prenzlau, Germany, on June 21, 1867. He studied painting and architecture at the Royal Academy of Design in Berlin.
In 1908 Bluemner met Alfred Stieglitz, who introduced him to the artistic innovations of the European and American avant-garde. By 1910, Bluemner had decided to pursue painting full-time rather than architecture.
He exhibited in the 1913 Armory Show. He said that the Americans' contribution failed to match that of the Europeans because the American selection process reflected rivalries and compromises rather than curatorial judgment, resulting in a "melée of antagonistic examples". Then in 1915 Stieglitz gave him a solo exhibition at his gallery, 291. Despite participating in several exhibitions, including solo shows, for the next ten years Bluemner failed to sell many paintings and lived with his family in near poverty.
He created paintings for the Federal Arts Project in the 1930s.