Kanken Tōyama
Kanken Tōyama was a Japanese schoolteacher and karate master, who developed the foundation for the Shūdōkan karate style.
Born into a noble family in Shuri, Okinawa, Japan, he was given the name Oyadameri Kanken.
He trained under: Itosu Anko and Itarashiki primarily, and under Ankichi Aragaki, Azato Anko, Chosho Chibana, Oshiro, Tana, Yabu Kentsu
and Kanryo Higashionna.
Nine years old, he began his karate training under Ankō Itosu, and remained a student there until Itosu died in 1915.
He also studied Naha-te under Kanryō Higaonna and Tomari-te under Ankichi Aragaki.
In 1924 Toyama moved his family to Taiwan where he taught in an elementary school and studied Chinese Ch'uan Fa, which included Taku, Makaitan, Rutaobai, and Ubo. Given this diverse martial arts background, the Japanese government soon recognized Toyama's prowess, and awarded him the right to promote to any rank in any style of Okinawan karate. An official gave Toyama the title of master instructor.
In early 1930 he returned to Japan and on March 20, 1930, he opened his first dojo in Tokyo. He named his dojo Shu Do Kan meaning "the hall for the study of the karate way." Toyama taught what he had learnt from Itosu and the Ch'uan Fa and did not claim to have originated a new style of karate. In 1946, Toyama founded the All Japan Karate-Do Federation with the intention of unifying the various forms of karate of Japan and Okinawa under one governing organization.
This JKF is the old name of, and current JKF is the other organization.
The individuals listed below are Shudokan pupils of Toyama as listed in Karate-Do Tai Hokan. The translated partial list includes the karate-do shihan and hanshi title license and high degree rank. The '*' symbol indicates persons and organizations that did not train directly with Toyama, but were confirmed as members with the responsibilities of the shihan title and high degree rank. The '?' symbol indicate partial or missing translations.
| Name | Title | Position / Location | |
| Iji Choshin | Shihan | Okinawa Shuri City To Sho Kan | - |
| Iwasa Kahoya | Hanshi Shihan | Hokaido Superior Branch Coal Mine, Branch Mining Director | - |
| Ito Mikihiro | Hanshi Shihan | Tokyo Distinguished College Teacher, Mori Dojo Director | - |
| In Hei Jin | Shihan | Seoul, Korea Dojo | - |
| In ? Hei | Shihan | Tokyo Kanbukan Director | - |
| Inoue Kiyoshi | Shihan | Tokyo Metropolitan Ota District | - |
| Izumikawa Hiroki | Hanshi Shihan | Kawasaki City, Senbukan Director | * |
| Hanaue Toshio | Hanshin Shihan | Kanagawa Prefecture, Atsugi City, Kodokan Director | - |
| Toshishinga Fumio | Shihan | Hokaido, Toshishinga Dojo Director | - |
| Chitose Tadashi | Hanshin Shihan | Chiba Prefecture, Choshi City Nen Dojo Cho | - |
| Onishi Eizo | Shihan | Ehime Prefecture, Iyo City, Koeikan Director | - |
| Onishi Kazuhiro | Shihan | Ehime Prefecture, Kawanoishi | - |
| Ogawa Hideharu | Shihan | Tokyo Metropolitan, Shinjuku District | - |
| Watanabe Kenichi | Hanshin Shihan | Tokyo Metropolitan, Ota District, Seidokan Director | - |
| Katsumura Masao | Hanshin Shihan | Yokohama City, Seidokan Director | * |
| Yoshikawa Hideo | Hanshin Shihan | Tokyo Metropolitan, Nerima District, Seifukan Director | - |
| Yoshida Tetsuo | Shihan | Ibaragi Prefecture, Tatsugazaki City, Taiikukyokai Karate Club Director | - |
| Tamaki Hakufu | Hanshin Shihan | Oita Prefecture, Beppu City, Tachinaka Section Junior High School Principal | - |
| Takamine Michio | Shihan | Kyushu | - |
| Mou Hozo | Shihan | Kyushu | - |
| Tsuchiya Hideo | Shihan | Kanagawa Prefecture, Odawara City | - |
| Narazaki Takeo | Hanshin Shihan | Tokyo Metropolitan, Setagaya Kempokan Director | - |
| Nakagomi Ichiro | Shihan | Yamanashi Prefecture, Yu Dan Sha Chairman | - |
| Korishima Ichiro | Hanshin Shihan | Tokyo, Retired Army Lieutenant General | - |
| Kurita Yoshifumi | Shihan | Ehime Prefecture | - |
| Yabiku Isamu | Shihan | Tokyo Metropolitan, Muronouchi | - |
| Fujiwara Fumiyoshi | Shihan | Fukuoka City, Tenjin Cho, Seiki Dojo Director | - |
| Kinoshita Yoshifumi | Shihan | Saitama Prefecture, Kitaadachi County | - |
| Koizumi Shonosuke | Shihan | Tokyo Metropolitan, Meguro District | - |
| Koyasu Michio | Shihan | Kyushu | - |
| Amamiya Hiroshi | Shihan | Yamnashi Prefecture, Shioyama City | - |
| Akamine Shozuke | Shosuke Shihan | Kawasaki City, Nakajima | * |
| Arai Toshiro | Shihan | Tokyo Metropolitan, Toshima District, Chihaya Preparatory School Director | - |
| Arakaki Ryusho | Shihan | Tokyo Metropolitan, Yoyogi Shudokan Branch Dojo Director | - |
| Sakura Toshio | Shihan | Tokyo Metropolitan, Daito District | - |
| Kinjyo Hiroshi | Hanshi Shihan | Tokyo Renbukan Shihan | * |
| Shimabukuro Kosuke | Shihan | Yokohama City, Tsurumi District, Shimabukuro Dojo Director | - |
| Shibanaka Iwao | Shihan | Ehime Prefecture | - |
| Shimono Keiji | Shihan | Self Defense Force General Affairs Director | - |
| Higa Yoshito | Hanshi Shihan | Okinawa, Public Prosecutor General | - |
| Higa Yoshiaki | Shihan | Yokohama City, Tsurumi District | - |
| Higashiona Hiroshi | Hanshi Shihan | Kanagawa Prefecture, Omichikan Headquarters Director | * |
| Higa Seitoku | Shihan | Ryukyu Public Prosecutors Office, Prosecuting Attorney |
Other students awarded shihan and hanshi title license and high degree rank but not referenced in Karate-Do Tai Hokan.
| Name | Title | Position / Location | |
| Isao Ichikawa | Hanshin Shihan | Founder Karatedo Doshinkan | - |
| Morita Sadao | Shihan | Yokohama City | - |
| Suzuki Hideaki | Shihan | Tokyo Metropolitan, Ota District | - |
| Suzuki Yoshitsugu | Shihan | Shizuoka Prefecture, Seishukan Director | - |
| Sunabe Koichi | Shihan | Yokohama City, Tsurumi District, Sunabe Dojo Director | - |
| Akitani Seiji | Shihan | Shudokan Chairman | - |
| Murata Yoshitaro | Shihan | Hokaido | - |
| Takazawa Masanao | Shihan | Okaya City, Nagano Perfecture |