◆1st
　URASHIRO Jiro
　Apr. 1, 1965～Aug. 31, 1965

◆2nd
　SHIMA Yoshio
　Sep. 1, 1965～Mar. 31, 1973

◆3rd
　INOUE Tokio
　Apr. 1, 1973～Mar. 31, 1977

◆4th
　MORIYAMA Takafumi
　Apr. 1, 1977～Mar. 31, 1980

◆5th
　IMANISHI Ichiji
　Apr. 1, 1980～Apr. 1, 1982

◆6th
　TSURU Hiromichi
　Apr. 2, 1982～Apr. 1, 1986

◆7th
　TSUJIMOTO Akira
　Apr. 2, 1986～Apr. 1, 1988

◆8th
　YAMAUCHI Kazuo
　Apr. 2, 1988～Apr. 1, 1990

◆9th
　OKAMOTO Hiroshi
　Apr. 2, 1990～Mar. 31, 1992

◆10th
　NIKAI Hiromasa
　Apr. 1, 1992～Mar. 31, 1994

◆11st
　SUGINAKA Hidekazu
　Apr. 1, 1994～Mar. 31, 1996

◆12nd
　IWAMOTO Yoshifumi
　Apr. 1, 1996～Mar. 31, 1997

◆13rd
　NAGASAKI Nobuo
　Apr. 1, 1997～Mar. 31, 2000

◆14th
　TANNE Kazuo
　Apr. 1, 2000～Mar. 31, 2004

◆15th
　KURIHARA Hidemi
　Apr. 1, 2004～Mar. 31, 2008

◆16th
　TAKATA Takashi
　Apr. 1, 2008～Mar. 31, 2012

◆17th
　SUGAI Motoyuki
　Apr. 1, 2012～Mar. 31, 2016

◆18th
　KATO Koichi
　Apr. 1, 2016～Mar. 31, 2020

◆19th
　TANIMOTO Kotaro
　Apr. 1, 2020～Mar. 31, 2024

◆20th
　KAKIMOTO Naoya
　Apr. 1, 2024～