Former Presidents
- 1st President Shigenobu Okuma
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1907 – 1922
- Honorary President Nobutsune Okuma
-
1923 – 1947
- 2nd President Masasada Shiozawa
-
1923
- 3rd President Sanae Takata
-
1923 – 1931
- 4th President Hozumi Tanaka
-
1931 – 1944
- 5th President Tomio Nakano
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1944 – 1946
- 6th President Koichi Shimada
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1946 – 1954
- 7th President Nobumoto Ohama
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1954 – 1966
- 8th President Ken’ichi Abe
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1966 – 1968
- 9th President Tsunesaburo Tokoyama
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1968 – 1970
- 10th President Sukenaga Murai
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1970 – 1978
- 11th President Tsukasa Shimizu
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1978 – 1982
- 12th President Haruo Nishihara
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1982 – 1990
- 13th President Chumaru Koyama
-
1990 – 1994
- 14th President Takayasu Okushima
-
1994 – 2002
- 15th President Katsuhiko Shirai
-
2002 – 2010
- 16th President Kamata Kaoru
-
2010 – 2018
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