Sadaaki Akamatsu (赤松 貞明, Akamatsu Sadaaki, 30 July 1910 – 22 February 1980) was an officer and ace fighter pilot in the Imperial Japanese Navy (IJN) during the Second Sino-Japanese War and the Pacific theater of World War II. In aerial combat over China and the Pacific, he was officially credited with destroying 27 enemy aircraft.