Private company

Japan Sumo Association

Logo: Japan Sumo Association, Public domain, via Wikimedia Commons3

Wrestling regulatory agency

The Japan Sumo Association (Japanese: 日本相撲協会, Hepburn: Nihon Sumō Kyōkai), officially the Public Interest Incorporated Foundation Japan Sumo Association (公益財団法人日本相撲協会, Kōeki zaidanhōjin Nihon Sumō Kyōkai); sometimes abbreviated JSA or NSK, and more usually called Sumo Kyōkai, is the governing body that operates and controls professional sumo wrestling, called ōzumō (大相撲), in Japan under the jurisdiction of the Japanese Ministry of Education, Culture, Sports, Science and Technology (MEXT).2 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

Jan 30, 2014Founded1
  • HeadquartersYokoami1
  • Websitewww.sumo.or.jp
  • Legal formpublic interest incorporated foundation1
Ryogoku Great Sumo Hall
Photo: Steve Cadman, CC BY-SA 2.0, via Wikimedia Commons5

The Japan Sumo Association (Japanese: 日本相撲協会, Hepburn: Nihon Sumō Kyōkai), officially the Public Interest Incorporated Foundation Japan Sumo Association (公益財団法人日本相撲協会, Kōeki zaidanhōjin Nihon Sumō Kyōkai); sometimes abbreviated JSA or NSK, and more usually called Sumo Kyōkai, is the governing body that operates and controls professional sumo wrestling, called ōzumō (大相撲), in Japan under the jurisdiction of the Japanese Ministry of Education, Culture, Sports, Science and Technology (MEXT).2

Corporate structure

Japan Sumo Association sits at the top of its group. 2 entities, 1 country on record. Switch between the flow chart and the network, and select any entity to see its details.

  • Japan Sumo Association Yokoami
    • Yokozuna Deliberation Council Subsidiary · Japan

Built from subsidiaries, stakes and holdings from Wikidata (CC0); major holders from Schedules 13D and 13G. Each entity in the chart links to its source.

The story

Beginnings of organizations

The association has its origins in a Shinto ritual (or festival) that has been held since ancient times to pray for a bountiful harvest. This primary form of sumo was called shinji-zumō (神事相撲). During the Sengoku period, Oda Nobunaga made sumo a popular sport, aided by the emergence of large cities (like Edo, Osaka, Sendai and Nagoya), which soon began to compete with Kyoto's cultural monopoly, as it was Japan's only metropolis at the time. These new cultural centres saw the emergence of wrestling groups, from both the commoners and the warrior classes, who took part in festivities at shrines. During the Edo period, sumo bouts, called kanjin-sumo (勧進相撲), were often held to raise funds to develop provinces (new construction or repair of bridges, temples, shrines and other public buildings) or for entertainment purposes.

After the Sengoku period, during the period of peace established under the Tokugawa shogunate, Japan experienced an unprecedented period of vagrancy for many samurai who had lost their social standing (called rōnin). These masterless samurai, began to be organized in two extremes that coexisted side by side. On the one hand, certain powerful clans formed suites of wrestlers organized into veritable royal households called geisha-gumi (芸者組; lit. 'geisha troupe'), and elevated them to the status of vassals. On the other hand, a number of rōnin had no choice but to put their martial skills to good use in street sumo tournaments, called tsuji zumō (辻相撲, tsuji-sumo; lit. 'street-corner wrestling'), for the entertainment of passers-by. Similarly, a number of street entertainment wrestling groups formed and began touring, sometimes with the support of shrines that occasionally recruited them as part of religious festivities and to help priests raising money for the construction of buildings. Eventually, this mix of professional wrestlers and disgraced rōnins, along with the commoners who took part in the contests of strength of the street tournaments, created conflicts over money. Tense brawls, even deaths, sometimes occurred. Public order became so disturbed that in 1648 the Edo authorities issued an edict banning street sumo and matches organized to raise funds during festivities. Over the next two decades or so, the wrestlers, now without any income, decided to petition the authorities to lift the bans, forming informal associations that resembled coalitions of interests to protect themselves from any violent repression of their movement. In 1684, these movements bore fruit and a rōnin by the name of Ikazuchi Gondaiyū (雷 権太夫) obtained permission to hold a tournament after proposing a new etiquette associated with tournaments. The organization of tournaments began to depend more on groups following new standards designed to satisfy the authorities of the towns hosting them. These associations gradually came to depend on the influence of retired former wrestlers who began to organize tournaments.

At that time, the Edo-based association (although composed of elders as today) was organized in such a way as to be dominated by a duo of executives, the fudegashira (筆頭), the director, and the fudewake (筆別), his second. The composition of the banzuke and its hierarchy was primarily their decision, and conflicts of interest were common. In addition, the profits from the tournaments were first divided among them before a portion was given to the other elders, who in turn distributed the money to their disciples. Because of the filtering of high-ranking managers, little money reached the bottom of the ladder, and this system was only tolerated because the patronage of local lords also added extra salaries for high-ranking wrestlers.

The foundations of the current association

Wrestlers who took part in these authorised tournaments without the patronage of lords did not yet have samurai status or a salary and their finances depended largely on donations they could receive from the organisers of charity tournaments or admirers. The organisers also ensured that they were fed and housed for the duration of the tournament. In those days the promotion system was decided by the tournament organisers, who then distributed the profits to the elders who then redistributed funds to their wrestlers, with the wrestlers under the protection of the lords receiving bonuses and having financial security and the others being kept in a situation of poverty. In 1757, during the Hōreki era, the beginnings of the Japan Sumo Associations were formally established as Edo Sumō kaisho (江戸相撲会所, Edo Sumo Club), later called Tokyo-zumō kaisho. In 1869, the Ōsaka Sumō Kyōkai (大坂相撲協会, Osaka Sumo Association) was founded. Each associations had their own history and changes. For example, from 1888 to 1895 the Kōkaku-gumi (廣角組), led by wrestlers Ōnaruto and Shingari, broke off from Osaka-sumo. In 1897, these movements led to reforms in the Osaka-based association, which became the Ōsaka Sumō Kyōkai (大阪角力協会, Osaka Wrestling Association).

From 1789, the Edo-based association began to incorporate religious practices into the sport, under the guidance of the House of Yoshida Tsukasa and the status of yokozuna was created in Edo. In the 1870s, the first wrestlers' revolt was organized by Takasago Uragorō asking for better treatment for the wrestlers (without initial success) and created a split from the Tokyo-based association before merging again. The Meiji Restoration was a period of semi-censorship of sumo, with the adoption of Western ideology leading to the perception of sumo as unworthy of the new era, as the matches were seen as barbaric and the semi-nudity of the wrestlers shocking. With the disappearance of government protection, the association found it difficult to keep up the number of wrestlers. At the same time, political circles were organized to preserve some of Japan's indigenous traditions, saving on behalf of the association the privilege of wrestlers to wear samurai chonmage (topknot) in 1871. The nobility introduced changes to the way tournaments were organised, reforming the way winnings were distributed and creating the status of association director. In an effort to change its image, the Tokyo-zumō kaisho changed its name to Tokyo Ōzumō Kyōkai (東京大相撲協会, Tokyo Grand Sumo Association) in 1889. The internal reforms carried out at the time included the election of directors, the creation of a fixed income for wrestlers and a change in refereeing decisions from gyōji to shimpan. During the same year, the Tokyo Ōzumō began to think about a project to install an arena at Hibiya Park to hold its bouts indoors, but the project was abandoned for lack of funds. In 1909, the association founded its first arena by inaugurating the first Ryōgoku Kokugikan, in order to avoid having to depend on the weather for tournaments held at the Ekō-in temple. Social movements in sumo did not cease, however, and in 1911 a strike called the Shinbashi Club Incident organized by low-ranking wrestlers asked for a new wage reform, securing a bonus (made up of payment in cash and a deposit in a pension fund) distributed to all wrestlers who were not ōzeki or yokozuna. In 1923, another strike known as the Mikawajima Incident demanded better pensions for wrestlers and was led by Yokozuna Ōnishiki, without success. In the same year, the first Kokugikan was ravaged by fire following the Great Kantō earthquake and most of the association's archives were lost.

Gradually, the Tokyo-based sumo association became dominant. In April 1925, Prince-Regent Hirohito invited the Tokyo Sumo Association to hold a tournament at the Imperial Palace, with the implied aim of also featuring wrestlers from the Osaka-based association. During the tournament, the Emperor's Cup (then the Prince-Regent's Cup) was awarded for the first time. Under the impetus of this tournament, a joint competition plan with a common banzuke was proposed, concluding talks that had been taking place since the early 1920s to merge the two rival associations. To establish a ranking according to the wrestlers' skills, qualifying tournaments were organized in November 1925 and in March and October 1926. The March 1926 tournament was officially recognised as the first modern honbasho (professional sumo championship tournament). During the same period, on 28 December 1925, the Tokyo Ōzumō Kyōkai became the Dai-Nihon Sumō Kyōkai (大日本相撲協会, All Japan Sumo Association), an organization now recognised as the first incarnation of today's association.

Merger and final recognition

As a result of the qualifying tournaments, the Osaka-based association lost many top-ranked wrestlers who found themselves demoted in the rankings, although Yokozuna Miyagiyama (the top ranked wrestler in Osaka) was able to retain his position. During tournaments, Osaka's wrestlers were regularly outclassed by their Tokyo counterparts, with some wrestlers ranked as ōzeki or yokozuna in Osaka even struggling against Tokyo's komusubi or sekiwake. Later in 1925, the first chairman of the association, Lieutenant-General Hirose Seitoku, was named.

In January 1927, the Osaka-based sumo association officially merged with the All Japan Sumo Association after a long decline. It saved face in the first tournament after the merger of the two associations, as the championship was won by Miyagiyama. The association formally acquired the status of nonprofit organization, and was placed under the supervision of the Ministry of Education, Science, Sports and Culture, since in Japan this type of organization requires registration with a government institution.

Read the full text

In 1932, the last major wrestlers' strike broke out with the Shunjuen Incident, calling for fundamental reform of the Sumo Association and leading to a mass resignation of wrestlers the likes of which professional sumo had never seen before. From 1933 to 1937, the All Japan Sumo Association briefly experienced a secession leading to the foundation of the Dai-Nihon Kansai Sumō Kyōkai (大日本関西角力協会, All Japan Kansai Sumo Association) by members of the Dewanoumi ichimon. The secessionist association later dissolved, but never had the association been so close to destruction.

In 1944, the first successor from the sumo world was chosen and Dewanoumi (the former Tsunenohana) became chairman of the association. After the war, the association was further modernized, in particular to maintain the sport in the context of the "budo ban" (a ban enforced on the practice of combat training disguised as martial arts gatherings by the authoritarian government) applied by the Allied forces. Thanks to the efforts of Musashigawa (the former Dewanohana) and Kasagiyama Katsuichi (a wrestler who spoke a little English), the association succeeded in convincing the Americans of the tournaments' good faith, and the first honbasho to be held after the war was in November 1945. Since the tournaments were later expropriated from the original Kokugikan for use by soldiers as "Memorial Hall", the association moved its headquarters to the Meiji Shrine in June 1947. In 1950, following a scandal involving the withdrawal from competition of the three yokozuna of the time (Azumafuji, Terukuni and Haguroyama) the association considered demoting the highest-ranking sumo wrestlers in the event of a poor score or consecutive absence from two tournaments, but decided to back down following pressure from traditionalists and purists. Common ground was found and the Yokozuna Deliberation Council was created, definitively detaching the association from the House of Yoshida, and declaring that the appointment of yokozuna would henceforth be based on recommendations from the board of directors and the new committee. In 1954, the association moved its headquarters to the Kuramae Kokugikan.

The modernizations launched after the war were also notably introduced in response to a scandal highlighting the management of the association's missions and funds. In 1957, a special commission of the National Diet investigated the improper use of money by the association due to the general inability of the public to reserve seats for tournaments, in opposition to its non-profit status. In those days, the reservation system was mainly based on private teahouses, which gave patrons privileged access to tournaments. The scandal erupted when it was revealed that the wife and daughter of the then chairman, Dewanoumi, were running two of the biggest houses. The Diet also considered the association's missions, based on the testimonies of former Tenryū Saburō (former leader of the Shunjuen Incident) and Akutsugawa Kōichirō (former director of the association under the name Sadogatake). The association was further criticized for failing in its duties as a public interest corporation, notably on the subject of sumo teaching, by favoring the pursuit of profit. To sidestep the debate, the association founded the Sumo School to teach its recruits the basics of sumo. Since he was personally blamed for the management problems, Dewanoumi tried to commit suicide by seppuku. He was replaced by Tokitsukaze (former Futabayama) who began a series of reforms. Under his chairmanship, the teahouse system was reformed, with 40% of places now reserved for direct purchase, and the system placed under a commercial company directly dependent on the association. In 1958, the association took its definitive name by being renamed "Japan Sumo Association".

Modern times

In March 1968, the association's statutes were amended to restrict board membership to toshiyori, high-ranking wrestlers and gyōji. The number of directors was also limited to ten elders after negotiations between the five ichimon.

In the 1970's, the association opened up more officially to foreign wrestlers, which led to reflection on the possibility of these wrestlers remaining in the association after retirement. More specifically, the case of Hawaiian wrestler Takamiyama in 1976 provoked a conservative reaction from the association, which declared that sumo being Japan's national sport, it was inconceivable that a foreigner could participate as a trainer. The statement was subsequently severely criticized in the press. This led the association to correct its position in this regard, with the JSA subsequently declaring that Takamiyama and Kaneshiro (a Japanese sumo wrestler of Korean descent) would indeed be eligible to become coaches within the association after their retirements. Takamiyama was the first to retire, becoming a coach under the name Azumazeki, the first foreign-born sumo wrestler to do so.

In 1985, the association once again moved its headquarters and inaugurated the second Ryōgoku Kokugikan, acquiring the land by purchasing it from Japan National Railways.

In the early 1990s, an internal debate also shook the association over the fact that a foreign wrestler could become yokozuna. In 1992, a member of the Yokozuna Deliberation Council, Kojima Jo, was quoted in the magazine Bungei Shunjū as opposing the appointment of foreigners, who he felt were too far removed from the hinkaku (品格), the 'dignity', needed to become one of professional sumo's top ranked wrestler. However, other members of the council and the association maintained that they would consider a promotion if its conditions were met, regardless of who the wrestler was. Further controversy arose when The Nihon Keizai Shimbun reported that Konishiki, at the time the foreigner closest to promotion, had alleged racial discrimination was the reason for his being denied promotion. The New York Times subsequently quoted Konishiki as saying, "If I were Japanese, I would be yokozuna already". The association demanded an apology and Konishiki held a press conference during which he tearfully denied making the remarks. He insisted that The Nihon Keizai Shimbun had misinterpreted his remark, and that he had not spoken to The New York Times, and instead a Hawaiian apprentice Koryū had impersonated him on the telephone. In 1993, Akebono, a student of Azumazeki (former Takamiyama), became the first foreign-born yokozuna in the history of the sport.

Scandals prompting a reform era

Between 2007 and 2008, two scandals hit the association (the Tokitsukaze stable hazing scandal and the cannabis use scandal) leading to the resignation of chairman Kitanoumi in September 2008 and the appointment of Musashigawa (the former Mienoumi). In a move to increase transparency, the MEXT (under Vice-minister Kenshiro Matsunami) demanded the opening of the Sumo Association's board of directors to external auditors, introducing non-toshiyori personalities into the decision-making system for the first time in 63 years. At the time, the association's statutes clearly stated that only former wrestlers could sit on the board of directors but Vice-minister Matsunami insisted that the scandal was "the biggest disgrace in the history of sumo". Some internal voices argued that new blood was needed, opposing the appointment of then-chairman of the Yokozuna Deliberation Council, Ebisawa Katsuji. The new members of the Board were three auditors: Itō Shigeru (Professor Emeritus at the University of Tokyo), Murayama Hiroyoshi (lawyer and former Prosecutor General of the Tokyo Prosecutors' Office) and Jun Yoshino (former Police Commissioner). Although the internal organization was changed following the scandal, the external auditors are not given voting rights on the board and their position is only part-time.

From Wikipedia’s article on Japan Sumo Association, shared under CC BY-SA 4.0.4

Leadership

Who has led Japan Sumo Association, and when. Pick a name to see everywhere that person has worked.

Subsidiaries and ownership

Subsidiaries

  • Yokozuna Deliberation Council

From Wikidata.1

Timeline

  1. Jan 30, 2014Founded Founded1