Conrad Marca-Relli (born Corrado Marcarelli; June 5, 1913 Boston – August 29, 2000 Parma) was an American artist who belonged to the early generation of New York School Abstract Expressionist artists whose artistic innovation by the 1950s had been recognized across the Atlantic, including Paris. New York School Abstract Expressionism, represented by Jackson Pollock, Willem de Kooning, Franz Kline, Marca-Relli and others became a leading art movement of the postwar era.
Marca-Relli's early cityscapes, still lifes, circus themes and architectural motifs are reminiscent of Italian surrealist painter Giorgio de Chirico. Throughout his career, Marca-Relli created monumental-scale collages. He combined oil painting and collage, employing intense colors, broken surfaces and expressionistic spattering. He also experimented with metal and vinyl materials. Over the years the collages developed an abstract simplicity, evidenced by black or somber colors and rectangular shapes isolated against a neutral backdrop.
In 1967, the Whitney Museum of American Art gave him a retrospective show.
The Archivio Marca-Relli, which was established by the artist and Galleria d'arte Niccoli in Parma in 1997, collects informations about Conrad Marca-Relli and archives his work for a future general catalogue.