Budo taijutsu (martial ways of moving the body) is a practical and natural Japanese martial art system founded in the lore and experiences of the samurai warriors of feudal Japan.

The art explores techniques, forms, and principals from nine classical Japanese martial art schools known as ryu in the form of unified natural movement. Principals covered include striking, grappling, locks, throws, restraints, methods of escape, the use distance, timing, rhythm, positioning, and human potential philosophy.

Dr. Masaaki Hatsumi is the headmaster and founder of the art, drawing on the classical martial traditions that he inherited from his teacher Toshitsugu Takamatsu.