Genpei Akasegawa (赤瀬川 原平, Akasegawa Genpei) was a pseudonym of Japanese artist Katsuhiko Akasegawa (赤瀬川 克彦, Akasegawa Katsuhiko) (March 27, 1937 – October 26, 2014). He used another pen name, Katsuhiko Otsuji (尾辻 克彦, Otsuji Katsuhiko), for literary works. He has had retrospective exhibitions at the Hiroshima City Museum of Contemporary Art, Chiba City Museum, and Oita City Museum. His work is in the permanent collection at Museum of Modern Art in New York. Nam June Paik has described Akasegawa as “one of those unexportable geniuses of Japan.”