Toshinosuke Ichimaru, also known as Rinosuke Ichimaru (????? Ichimaru rinosuke, Karatsu, September 20, 1891 - Iwo Jima, March 26, 1945), was a Japanese admiral and aviator of the Second World War.
First pioneer, then a fighter pilot of the Dai-Nippon Teikoku Kaigun Koku Hombu, the aeronautical service of the Japanese Imperial Navy.
During the Second World War, he commanded numerous air units, participating in the Guadalcanal Campaign.
In August 1944 he assumed command of the Imperial Navy forces present on the island of Iwo Jima, finding his death in combat against the US Marines on March 26, 1945.