Theodoros Stamos (1922-1997) was a Greek American artist. He is one of the original group of abstract expressionist painters (the ''Irascibles''), which included Jackson Pollock, Willem de Kooning, and Mark Rothko. His work is distinctive for its muted palette, organic forms, and connection to spirituality. Born in Manhattan to Greek immigrant parents, Stamos studied sculpture at the American Artists' School, but later taught himself painting. During the 1940s, he ran a framing shop near Union Square where his counted among his clients modernists Arshile Gorky, Paul Klee, and Fernand Leger. In 1943, he had his first solo show at Betty Parsons's Wakefield Gallery. His work expressed similarities to other modernist artists in his search for universal truth through myth and biomorphic abstraction.

His later years were marked by his involvement in his close friend of Mark Rothko's estate, in which he was found guilty of fraudulent handling. In later years he lived between New York and the Greek island of Lefkada, and held positions teaching at Black Mountain College, Columbia University, and at the Art Students League. His work is in numerous public collections, including the Albright-Knox Art Gallery in Buffalo, NY, Brooklyn Museum of Art, Art Institute of Chicago, High Museum of Art in Atlanta, GA, Museum of Modern Art, Metropolitan Museum of Art, National Picture Gallery in Athens, Greece, and the Hirshhorn Museum and Sculpture Garden.