Yamaoka Tesshu

• Birth: 1836
• Death: 1888
• Titles: Bakufu Kenjutsu Sewayaku
• Other name: Ono Tetsutaro
• Japanese: 山岡鉄舟 (Yamaoka Tesshu) 山岡鉄太郎高歩 (Yamaoka Tetsutaro Takayuki)

Ono Tetsutaro was born as a son of Okura Bugyo Ono Tomoemon and later he was adopted to Hatamoto Yamaoka family. He learned Hokushin Itto Ryu from Chiba Shusaku in Kobusho and became the Kobusho Kenjutsu Sewayaku.

1857, he formed Torao Party with Kiyokawa Hachiro.

1863, he and Kiyokawa were appointed to be directors of the Roshigumi but Kiyokawa suddenly changed the purpose of the Roshigumi right after when they arrived Kyoto and made all but 24 people return to Edo. In April, Kiyokawa was assassinated and Yamaoka was put in disciplinary confinement.