Go Institutes is the professional go organization. When the Japanese name is not used it is generally referred to in English go publications as the Japanese Go Association. The Nihon Kiin is based in Tokyo and was formed in July 1924. The main driver was the [ext] Kanto earthquake, which caused great financial hardship among the existing Go groups of the time. Baron Okura Kishichiro was a primary patron of the new organization, investing ¥100,000 in a newly built hall in Tameike, Akasaka, completed in April 1926, and further supporting it with ¥1,000 a month through 1937. This hall (pictured below) was destroyed during World War II by the USAF strategic air campaign against the Japanese home islands.
The first president of the Nihon Ki-in was Makino Nobuaki?, a great Go patron himself, with Okura Kishichiro serving as vice president. The vast majority of pros at the time joined the fledgling organization, excepting the Inoue faction in Osaka and Nozawa Chikucho. A brief splinter group called Kiseisha was created soon after the Nihon Ki-in was formed, but most of the players involved had returned to the Nihon Ki-in within a couple of years. There have been many other such groups over the years (see Outside the Ki-ins for a list). By far the most important is the Kansai Ki-in in Osaka, formed in 1950 and still active today.