Bujinkan Budô Taijutsu, formally known as Bujinkan Ninpô Taijutsu or Ninjutsu, is a Japanese martial art that is  currently studied around the world. There are a very wide variety of skills taught in this system. This skills are based on nine (9) Ryû (styles or schools) that, in concert, make the protective "umbrella" called Bujinkan Budô Taijutsu. The oldest of these schools is close to 1000 years old. The current grandmaster of this system is Dr. Masaaki Hatsumi.

Historically, all older martial arts were designed specifically to defend oneself against threats of injury, and many times, death. These threats of death or serious bodily injury originated from highly skilled warriors, and not street fighters, or unskilled persons. As a result, the defender needed to be skilled in many forms of fighting and tactics, for one never knew when the attack would occur, how many attackers would be present, or, by which methods, skills, and trickery would be used against them. For those reasons, the skills within the Bujinkan have been growing and developing, for hundreds of years, into a largely complete system of highly adaptive and effective skills and methods.

The Bujinkan system is designed for combat, and by definition we mean that one's life is in peril. It is also designed for situations of self-defense, where one is threatened with physical harm, but it is not life threatening. The skills taught in the Bujinkan do not easily adapt to "sport" or "tournament" style fighting. In these types of "martial sports" there are many rules. And these rules are very important, for they are present, and enforced, to prevent, or lessen the chance, of injury and death to both competitive participants.

In the Bujinkan system we have techniques that are generally very safe, and also, dangerous techniques that can be done safely. It is important to note that many of the skills that are specifically prohibited in sport martial arts, because they could "hurt" or kill someone, are skills that are regularly practiced, and perfected, in the Bujinkan. For our training is optimized for dealing with a generally unknown attacker or attackers, that have an unknown level of strength and skill, that could easily be intent on taking our life. The skills we practice are not optimized for sport martial arts, where the skills of both parties are at similar levels, the goal is to score points without hurting the other, and we know the "fight" will only last for a predetermined amount of time, or, until a certain number of points are accumulated.