Inoue Genzaburo (?? ???, April 4, 1829 – January 29, 1868) was born in Hino, Tokyo).
He was the captain of the sixth unit of the Shinsengumi which were a special police force for the Tokugawa regime.
Inoue is the oldest unit captain of Shinsengumi.
Like his older brother, Inoue Matsugoro, Inoue Genzaburo was also a practitioner of the Tennen Rishin-ryu and mastered all the techniques of the school in 1860.
However, it is a misconception that he lived at the Shieikan.
In 1863, he joined the Roshigumi together with Kondo Isami and other members of the Shieikan.Inoue Genzaburo was related to Okita Rintaro (Okita Soji's brother-in-law).He was a serious person with a high ability.
He arrested eight members of the Ishin Shishi during the Ikedaya Affair in 1864.
Inoue died during the Battle of Toba–Fushimi (the first battle of the Boshin War) in January 1868.