Ibram Lassaw (Alexandria, May 4, 1913 – New York, December 30, 2003) was an American sculptor of Russian heritage, born in Egypt, known for non-objective constructions in welded metal. He matters because he carried abstraction into three-dimensional form at a time when sculpture was still closely tied to figuration.
The son of Russian Jewish émigré parents, he moved to the United States in 1921, when his family settled in Brooklyn. He first studied sculpture in 1926 at the Clay Club, and later at the Beaux-Arts Institute of Design and the City College of New York. His early abstract paintings and drawings drew on Kandinsky and Sophie Taeuber-Arp. In his sculpture he replaced the solid mass of cast metal with open, spatial forms built by welding. During the Depression he worked briefly on the Public Works of Art Project and then for the WPA, until he was drafted in 1942. He was a founding member of American Abstract Artists in 1937 and its president from 1946 to 1949. In the 1940s and 1950s he is associated with the New York School, and from 1955 he spent summers on Long Island's south fork, moving there permanently in 1963.