George Maciunas (; ; November 8, 1931 – May 9, 1978) was a Lithuanian-born American artist. He was a founding member and the central coordinator of Fluxus, an international community of artists, architects, composers and designers. Other leading members brought together by this movement included Ay-O, Joseph Beuys, George Brecht, Dick Higgins, Yoko Ono, Nam June Paik and Wolf Vostell.