Toyoaki Horiuchi (Japanese: 堀内豊秋, Hepburn: Horiuchi Toyoaki, 27 September 1900 – 25 September 1948) was a Japanese Navy officer; his highest rank was daisa (大佐, captain). He was known for the development of naval gymnastics, which were meant to improve the alertness and flexibility of sailors in closed areas of warships and he was known for leading the paratroopers. He was the first jumper during the drop on an airfield 60 km south of Manado, Indonesia, in the Battle of Manado.