Hidenosuke Sano
(May 6, 1950 – Dec. 24, 1955)
Manjiro Watanabe
(Mar. 1, 1956 – Feb. 28, 1966)
Taiichi Ito
(Mar. 1, 1966 – Jun. 9, 1969)
Takeo Watanabe
(Feb. 23, 1971 – Feb. 22, 1976)
Katsuji Kushima
(Feb. 23, 1976 – Feb. 22, 1981)
Yoshiyuki Umetsu
(Feb. 23, 1981 – Feb. 22, 1986)
Yoshitane Watabe
(Feb. 23, 1986 – Feb. 22, 1991)
Naoyoshi Niino
(Feb. 23, 1991 – Feb. 22, 1996)
Hiroshi Tokuda
(Feb. 23, 1996 – Feb. 22, 2001)
Akira Miura
(Feb. 23, 2001 – Mar. 31, 2008)
Noboru Yoshimura
(Apr. 1, 2008 – Mar. 31, 2014)
Kenichi Sawada
(Apr. 1, 2014 – Mar. 1, 2016)
Fumio Yamamoto
(Apr. 1, 2016 – Mar. 31, 2024)
〈Acting President〉
Toshihiro Kenoki
(May 31, 1949 – Jul. 30, 1949)
Kenzo Ikeda
(Jul. 31, 1949 – May 5, 1950)
Isamu Igarashi
(Dec. 25, 1955 – Feb. 29, 1956)
Tonomo Fujishima
(Jun. 10, 1969 – Feb. 22, 1971)
Nobuaki Ogawa
(Mar. 2, 2016 – Mar. 31, 2016)
