◆1st
Kunio Kawaishi
Aug. 1, 1953~Apr. 1, 1956
◆2nd
Kazuyoshi Nishimaru
Apr. 1, 1956~Oct. 22, 1956
◆3rd
Naokichi Suzuki
Oct. 22, 1956~Mar. 31, 1958
◆4th
Susumu Watanabe
Mar. 31, 1958~Mar. 31, 1960
◆5th
Hiroshi Tsukamoto
Mar. 31, 1960(Acting Director)
Apr. 1, 1960~Mar. 31, 1962
◆6th
Masayuki Nakatsuka
Apr. 1, 1962~Mar. 31, 1964
◆7th
Jiro Uraki
Apr. 1, 1964~Mar. 31, 1966
◆8th
Masayuki Nakatsuka
Apr. 1, 1966~May 6, 1969
◆9th
Jiro Uraki
May 7, 1969~May 21, 1969(Acting Director)
May 22, 1969~Oct. 13, 1969
◆10th
Hiroshi Kobayashi
Oct. 13, 1969~Mar. 12, 1970(Acting Director)
Mar. 12, 1970~Mar. 11, 1974
◆11th
Juzo Sawano
Mar. 12, 1974~Apr. 1, 1977
◆12th
Takuso Yamura
Apr. 2, 1977~Apr. 1, 1979
◆13th
Hiromi Nihira
Apr. 2, 1979~Apr. 1, 1981
◆14th
Takuso Yamura
Apr. 2, 1981~Apr. 1, 1982
◆15th
Yukio Nishimoto
Apr. 2, 1982~Sep. 10, 1985
◆16th
Yoshiyasu Matsuo
Sep. 10, 1985~Oct. 1, 1985(Acting Director)
Oct. 1, 1985~Mar. 31, 1986
◆17th
Shoji Tokuoka
Apr. 1, 1986~Mar. 31, 1988
◆18th
Michio Morio
Apr. 1, 1988~Mar. 31, 1990
◆19th
Yasuo Harada
Apr. 1, 1990~May 20, 1993
◆20th
Takeshi Kawasaki
May 21, 1993~Mar. 31, 1994
◆21st
Kanji Choshi
Mar. 31, 1994~Mar. 31, 1996
◆22th
Fumitaka Yoshinaga
Apr. 1, 1996~Mar. 31, 1998
◆23rd
Yuichirio Matsuura
Apr. 1, 1998~Mar. 31, 2000
◆24th
Kozo Ohama
Apr. 1, 2000~Mar. 31, 2002
◆25th
Koki Inai
Apr. 1, 2002~Mar. 31, 2006
◆26th
Nobuoki Kono
Apr. 1, 2006~Mar. 31, 2010
◆27th
Masao Yoshizumi
Apr. 1, 2010~Mar. 31, 2014
◆28th
Yasuki Kihara
Apr. 1, 2014~Mar. 31, 2016
◆29th
Michihiro Hide
Apr. 1, 2016~Mar. 31, 2020
◆30th
Kazuo Awai
Apr. 1, 2020~Mar. 31, 2024
Apr. 1, 2024~Jun. 30, 2024(Acting Director)
◆31st
Nobuaki Shime
Jul. 1, 2024~