Theodoros Stamos was a Greek-American painter. He is one of the youngest painters of the original group of abstract expressionist painters, which included Jackson Pollock, Willem de Kooning and Mark Rothko. His later years were negatively affected by his involvement with the Rothko case.

Abstract expressionism in the United States emerged as a distinct art movement in the immediate aftermath of World War II and gained mainstream acceptance in the 1950s, a shift from the American social realism of the 1930s influenced by the Great Depression and Mexican muralists. The term was first applied to American art in 1946 by the art critic Robert Coates. Key figures in the New York School, which was the epicenter of this movement, included such artists as Arshile Gorky, Jackson Pollock, Franz Kline, Mark Rothko, Norman Lewis, Willem de Kooning, Adolph Gottlieb, Clyfford Still, Robert Motherwell and Theodoros Stamos among others.