Chūichi Nagumo (南雲 忠一, Nagumo Chūichi; 25 March 1887 – 6 July 1944) was an admiral in the Imperial Japanese Navy (IJN) during World War II. Nagumo led Japan's main carrier battle group, the Kido Butai, in the attack on Pearl Harbor, the Indian Ocean raid and the Battle of Midway. He committed suicide during the Battle of Saipan.