Thornton Willis

Thornton Wilson Willis (May 25, 1936 – June 15, 2025) was an American abstract painter. He contributed to the New York School of painting since the late 1960s. Viewed as a member of the Third Generation of American Abstract Expressionists, his work is associated with Abstract Expressionism, Lyrical Abstraction, Process Art, Postminimalism, Bio-morphic Cubism (a term he coined), and Color Field painting. Willis was a member of American Abstract Artists.