| 01.1917 (KA) - 05.1925 (KC) | Nishiiwa[2] Seikichi | OS Ashinoura# Seijiro | Nakamura | None | |
| 06.1925 (NE) - 12.1942 (NE) | Nishiiwa | vacant | | | |
| 01.1943 (KC) - 10.03.1945 (PA) | Nishiiwa[3] Seikichi | M4 Imizugawa Seikichi | Takasago | None | |
| 11.03.1945 (OO) - 10.1947 (OO) | Nishiiwa | vacant | | | M4 Imizugawa Seikichi |
| 11.1947 (KA) - 12.1953 (HI) | Nishiiwa[4] Ichio# | M3 Shachinosato Ichiro | Wakamatsu | Takasago | |
| 01.1954 (HI) - 04.1956 (KC) | Nishiiwa[4] Ichio# | M3 Shachinosato Ichiro | Nishiiwa | Takasago | |
| 05.1956 (KC) - during 07.1967 (RC) | Nishiiwa[5] Takenori | M18 Wakaarashi Takeshi | Wakamatsu | Takasago | |
| during 07.1967 (OO) - 27.11.1968 (OO) | Nishiiwa | vacant | | | M18 Wakaarashi Takeshi |
| 28.11.1968 (KA) - 02.1969 (CF) | Nishiiwa[6] Takemitsu | K Fujinishiki Akira | Takasago | Takasago | |
| 03.1969 (CF) - 22.09.1971 (KC) | Nishiiwa[6] Akira | K Fujinishiki Akira | Takasago | Takasago | |
| 23.09.1971 (OO) - 19.09.1973 (OO) | Nishiiwa | vacant | | | K Fujinishiki Akira |
| 20.09.1973 (KC) - 31.12.2003 (HCi) | Nishiiwa[7] Kenji | M5 Daimonji Kenji | Taiho | Nishonoseki | |
| 01.01.2004 (HCi) - 27.03.2005 (RM) | Nishiiwa[7] Kenji | M5 Daimonji Kenji | Otake | Nishonoseki | |
| 28.03.2005 (OO) - 15.05.2005 (OO) | Nishiiwa | vacant | | | M5 Daimonji Kenji |
| 16.05.2005 (KC) - 03.06.2005 (CO) | Nishiiwa[8] Munehiko | M6 Wakanojo Munehiko | Magaki | Nishonoseki | M5 Daimonji Kenji |
| 04.06.2005 (CO) - 30.05.2007 (RO) | Nishiiwa[8] Munehiko | M6 Wakanojo Munehiko | Magaki | Nishonoseki | S Wakanosato Shinobu |
| 31.05.2007 (KC) - 07.11.2011 (HT) | Nishiiwa[9] Shinichi | M8 Takanotsuru Shinichi | Naruto | Nishonoseki | S Wakanosato Shinobu |
| 08.11.2011 (OO) - 20.11.2011 (OO) | Nishiiwa | vacant | | | S Wakanosato Shinobu |
| 21.11.2011 (KA) - 06.05.2013 (KC) | Nishiiwa[10] Arata | S Tamanoshima Arata | Kataonami | Nishonoseki | S Wakanosato Shinobu |
| 07.05.2013 (OO) - 08.01.2015 (OO) | Nishiiwa | vacant | | | S Wakanosato Shinobu |
| 09.01.2015 (KC) - 26.07.2015 (KC) | Nishiiwa[11] Kenichi | M9 Kobo Kenichi | Takanohana | Takanohana | S Wakanosato Shinobu |
| 27.07.2015 (OO) - 02.09.2015 (OO) | Nishiiwa | vacant | | | S Wakanosato Shinobu |
| 03.09.2015 (KA) - 31.01.2018 (HB) | Nishiiwa[12] Shinobu | S Wakanosato Shinobu | Tagonoura | Nishonoseki | |
| 01.02.2018 (HB) - | Nishiiwa[12] Shinobu | S Wakanosato Shinobu | Nishiiwa | Nishonoseki | |