Masaaki Hatsumi, Japanese martial artist and educator, founded Bujinkan

Masaaki Hatsumi , formerly Yoshiaki Hatsumi, is the founder of the Bujinkan Organization and is the former Togakure-ryū soke (grandmaster). He no longer teaches, but currently resides in Noda, Chiba, Japan.

The Bujinkan is an international martial arts organization based in Japan and headed by Masaaki Hatsumi. The combat system taught by this organization comprises nine separate ryūha, or schools, which are collectively referred to as Bujinkan Budō Taijutsu. The Bujinkan is most commonly associated with ninjutsu. However, Masaaki Hatsumi uses the term Budo as he says the ryūha are descended from historical samurai schools that teach samurai martial tactics and ninjutsu schools that teach ninja tactics.