Jujutsu, literally meaning the "art of softness" or "way of yielding", is a collective name for Japanese martial art styles including unarmed and armed techniques. Jujutsu evolved among the samurai of feudal Japan as a method for defeating an armed and armored opponent without weapons. Due to the ineffectiveness of striking against an armored opponent, the most efficient methods for neutralizing an enemy took the form of pins, joint locks, and throws. These techniques were developed around the principle of using an attacker's energy against him, rather than directly opposing it.

There are many variations of the art, which leads to a diversity of approaches. Jujutsu schools may utilize all forms of grappling techniques to some degree. In addition to jujutsu, many schools taught the use of weapons.

Today, jujutsu is still practiced both as it was hundreds of years ago, but also in modified forms for sport practice. Derived sports forms include the Olympic sport and martial art of judo, which was developed from several traditional styles of jujutsu by Kano Jigoro in the late 19th century; and Brazilian Jiu-Jitsu, which was in turn derived from earlier version (pre World War II) of Kodokan judo.