Kazuo Shiraga (白髪 一雄, Shiraga Kazuo, August 12, 1924 – April 8, 2008) was a Japanese abstract painter and the first-generation member of the postwar artists collective Gutai Art Association (Gutai). As a Gutai member, he was a prolific, inventive, and pioneering experimentalist who tackled a range of media: in addition to painting, he worked in performance art, three-dimensional object making, conceptual art, and installations, many of which are preserved only in documentary photos and films.