Japanese martial arts refers to the variety of martial arts native to the country of Japan. At least three Japanese terms (budō, bujutsu, and bugei) are used interchangeably with the English phrase Japanese martial arts.

The usage of the term budō (武道) to mean martial arts is a modern one: historically the term meant a way of life encompassing physical, spiritual and moral dimensions with a focus on self-improvement, fulfillment or personal growth. The terms bujutsu (武術) and bugei (武芸) have different meanings from budō, at least historically speaking. Bujutsu refers specifically to the practical application of martial tactics and techniques in actual combat. Bugei refers to the adaptation or refinement of those tactics and techniques to facilitate systematic instruction and dissemination within a formal learning environment.

+Translations of Japanese martial artsTermTranslationmartial waymartial technique alternatively science, art or craft of warmartial art

History

Each child who grew up in a samurai family was expected to be a warrior when he grew up, so much of his childhood was spent practicing different martial arts. A complete samurai should be skilled at least in the use of the sword (kenjutsu), the bow and arrow (kyujutsu), the spear (sojutsu, yarijutsu), the halberd (naginatajutsu) and subsequently the use of firearms (houjutsu). Similarly, they were instructed in the use of these weapons while riding a horse. They were also expected to know how to swim and dive.Turnbull, Stephen. Samurai: The World of the Warrior. London. Osprey Publishing, 2003. . p. 14.

originates from the Sengoku period in the 15th century. The samurai developed , which was useful in case they were thrown overboard during naval conflicts. The samurai practiced , and to board enemy vessels. Activities included strokes with swords, bows and firearms. Hands were kept dry above the water to write messages with an ink brush on a paper scroll. This skill was useful for muskets which require dry gunpowder. Nihon Eiho is practiced by 28 schools and recognized by the Japan Swimming Federation.

During the feudal era of Japan, various types of martial arts flourished, known in Japanese under the name of .Ratti, Oscar; Westbrook, Adele (2001). Secrets of the Samurai: The Martial Arts of Feudal Japan. Tuttle Publishing. . p. 24. The term jutsu can be translated as "method", "art" or "technique"Ratti, Oscar; Westbrook, Adele (2001). Secrets of the Samurai: The Martial Arts of Feudal Japan. Tuttle Publishing. . p. 23. and the name that each one has is indicative of the mode or weapon with which they are executed. The combat methods that were developed and perfected are very diverse, among which are:

Ordinarily, the development of combative techniques is intertwined with the tools used to execute those techniques. In a rapidly changing world, those tools are constantly changing, requiring that the techniques to use them be continuously reinvented. The history of Japan is somewhat unusual in its relative isolation. Compared with the rest of the world, the Japanese tools of war evolved slowly. Many people believe that this afforded the warrior class the opportunity to study their weapons in greater depth than other cultures. Nevertheless, the teaching and training of these martial arts did evolve. For example, in the early medieval period, the bow and the spear were emphasized, but during the Tokugawa period (1603–1867 CE), fewer large-scale battles took place, and the sword became the most prestigious weapon. Another trend that developed throughout Japanese history was that of increasing martial specialization as society became more stratified over time.

The martial arts developed or originating in Japan are extraordinarily diverse, with vast differences in training tools, methods, and philosophy across innumerable schools and styles. That said, Japanese martial arts may generally be divided into koryū and gendai budō based on whether they existed prior to or after the Meiji Restoration (1868), respectively. Since gendai budō and koryū often share the same historical origin, one will find various types of martial arts (such as jujutsu, kenjutsu, or naginatajutsu) on both sides of the divide.

A note on the organization of this article; it would be impossible to discuss Japanese martial arts in terms of the thousands of individual schools or styles, such as Ittō-ryū, Daitō-ryū, or Tenshin Shōden Katori Shintō-ryū. Instead, major sections are divided based on when the art originated (regardless of whether it is still practiced), and subsections are dedicated to the root type of martial art, such as jujutsu (the art of empty-handed combat through use of indirect application of force) or kendo (Japanese sport fencing), wherein notable styles or major differences between styles may be discussed.

Koryū

, meaning "traditional school", or "old school", refers specifically to schools of martial arts, originating in Japan, either prior to the beginning of the Meiji Restoration in 1868, or the Haitōrei (Sword Abolishment Edict) in 1876. In modern usage, , meaning military art/science, is typified by its practical application of technique to real-world or battlefield situations.

The term also is used generally to indicate that a particular style or art is "traditional", rather than "modern". However, what it means for an art to be either "traditional" or "modern" is subject to some debate. As a rule of thumb, the primary purpose of a koryū martial art was for use in war. The most extreme example of a koryū school is one that preserves its traditional, and often ancient, martial practices even in the absence of continuing wars in which to test them. Other koryū schools may have made modifications to their practices that reflect the passage of time (which may or may not have resulted in the loss of "koryū" status in the eyes of its peers). This is as opposed to "modern" martial arts, whose primary focus is generally upon the self-improvement (mental, physical, or spiritual) of the individual practitioner, with varying degrees of emphasis on the practical application of the martial art for either sport or self-defence purposes.

The following subsections represent not individual schools of martial arts, but rather generic "types" of martial arts. These are generally distinguishable on the basis of their training methodology and equipment, though wide variation still exists within each.

Sumō

, considered by many to be Japan's national sport, has its origins in the distant past. The earliest written records of Japan, which are dated from the 8th century AD, record the first sumo match in 23 BC, occurring specifically at the request of the emperor and continuing until one man was too wounded to continue. Beginning in 728 AD, the Emperor Shōmu (聖武天皇, 701–756) began holding official sumo matches at the annual harvest festivals. This tradition of having matches in the presence of the emperor continued, but gradually spread, with matches also held at Shintō festivals, and sumo training was eventually incorporated into military training. By the 17th century, sumo was an organized professional sport, open to the public, enjoyed by both the upper class and commoners.

Today, sumo retains much of its traditional trappings, including a referee dressed as a Shintō priest, and a ritual where the competitors clap hands, stomp their feet, and throw salt in the ring prior to each match. To win a match, competitors employ throwing and grappling techniques to force the other man to the ground; the first man to touch the ground with a part of the body other than the bottom of the feet, or touch the ground outside the ring with any part of the body, loses. Six grand tournaments are held annually in Japan, and each professional fighter's name and relative ranking is published after each tournament in an official list, called the banzuke, which is followed religiously by sumo fans.

Jūjutsu

, literally translates to "soft skills". However, more accurately, it means the art of using indirect force, such as joint locks or throwing techniques, to defeat an opponent, as opposed to direct force such as a punch or a kick. This is not to imply that jujutsu does not teach or employ strikes, but rather that the art's aim is the ability to use an attacker's force against them, and counter-attack where they are weakest or least defended.

Methods of combat included striking (kicking, punching), throwing (body throws, joint-lock throws, unbalance throws), restraining (pinning, strangulating, grappling, wrestling) and weaponry. Defensive tactics included blocking, evading, off balancing, blending and escaping. Minor weapons such as the tantō (短刀; dagger), ryufundo kusari (weighted chain), jutte (十手; helmet-smasher), and kakushi buki (隠武器; secret or disguised weapons) were almost always included in koryū jujutsu.

Most of these were battlefield-based systems to be practiced as companion arts to the more common and vital weapon systems. At the time, these fighting arts went by many different names, including kogusoku, yawara, kumiuchi, and hakuda. In reality, these grappling systems were not really unarmed systems of combat, but are more accurately described as means whereby an unarmed or lightly armed warrior could defeat a heavily armed and armored enemy on the battlefield. Ideally, the samurai would be armed and would not need to rely on such techniques.

In later times, other koryū developed into systems more familiar to the practitioners of the jujutsu commonly seen today. These systems are generally designed to deal with opponents neither wearing armor nor in a battlefield environment. For this reason, they include extensive use of atemi waza (当て身技; vital-striking technique). These tactics would be of little use against an armored opponent on a battlefield. They would, however, be quite valuable to anyone confronting an enemy or opponent during peacetime dressed in normal street attire. Occasionally, inconspicuous weapons such as knives or tessen (鉄扇; iron fans) were included in the curriculum.

Today, jujutsu is practiced in many forms, both ancient and modern. Various methods of jujutsu have been incorporated or synthesized into judo and aikido, as well as being exported throughout the world and transformed into sport wrestling systems, adopted in whole or part by schools of karate or other unrelated martial arts, still practiced as they were centuries ago, or all of the above.

Swordsmanship

Swordsmanship, the art of the sword, has an almost mythological ethos, and is believed by some to be the paramount martial art, surpassing all others. Regardless of the truth of that belief, the sword itself has been the subject of stories and legends through virtually all cultures in which it has been employed as a tool for violence. In Japan, the use of the katana is no different. Although originally the most important skills of the warrior class were proficiency at horse-riding and shooting the bow, this eventually gave way to swordsmanship. The earliest swords, which can be dated as far back as the Kofun era (3rd and 4th centuries) were primarily straight bladed. According to legend, curved swords made strong by the famous folding process were first forged by the smith Amakuni Yasutsuna (天國 安綱, c. 700 AD).

The primary development of the sword occurred between 987 AD and 1597 AD. This development is characterized by profound artistry during peaceful eras, and renewed focus on durability, utility, and mass production during the intermittent periods of warfare, most notably civil warfare during the 12th century and the Mongolian invasions during the 13th century (which in particular saw the transition from mostly horseback archery to hand-to-hand ground fighting).