The Nihon Sumo Kyokai defines its departments as follows:

Other titles/departments used in the list:

The following is a list of oyakata with their ranks and the departments they are assigned to (last update: 2018 Apr 03).

RIJICHO (CHIEF EXECUTIVE DIRECTOR)
HakkakuManaging Director
RIJI (EXECUTIVE DIRECTORS)
OgurumaOperations Director, Chairman Of The National Supporters' Committee, Museum Committee Member, KHO
KagamiyamaGuidance Director, Lifestyle Guidance Director, CMT Director, Museum Committee Member, KHO
SakaigawaRegional Basho Director (Fukuoka)
KasuganoJungyo Director, SCIC Chairman, Security Head Office Director, KHO
DewanoumiRegional Basho Director (Nagoya)
YamahibikiSumo Training School Director
ShibatayamaInformation Director, General Enterprises Director, Museum Committee Member, KHO
TakashimaRegional Basho Director (Osaka)
Yamaguchi Toshikazu#External Executive Director, Auditor
Imai TamakiExternal Executive Director, Auditor
Takano# ToshioExternal Executive Director, Auditor, CMT member
KANJI (NON-EXECUTIVE DIRECTORS)
Okabe ...External Non-Executive Director, Auditor
Kajiki ...External Non-Executive Director, Auditor
Fukui Ryoji#External Non-Executive Director, Auditor
FUKURIJI (NON-EXECUTIVE/VICE DIRECTORS)
FujishimaOperations Vice-Director, Shimpan Vice-Director, Vice-Chairman of Doping Prevention Committee, Museum Committee Member, Shindeshi Examination Supervisor, KHO
HanakagoJungyo Vice-Director, Security Head Office Vice-Director, Shindeshi Examination Supervisor, Regional Basho (Fukuoka)
YAKUIN TAIGU IIN (EXECUTIVE OFFICERS)
NishonosekiGuidance Vice-Director
MichinokuGuidance Vice-Director
IsegahamaSumo Training School Vice-Director
NishikidoShimpan Vice-Director, Vice-Chairman of Doping Prevention Committee, Shindeshi Examination Supervisor
TakadagawaShimpan Vice-Director, Vice-Chairman of Doping Prevention Committee, Shindeshi Examination Supervisor
IIN (SENIOR OFFICERS)
NakadachiGuidance, Lifestyle Guidance, KHO
KabutoyamaSumo Training School, Guidance (Kimarite)
InagawaSumo Training School, Guidance (Kimarite)
ArashioGuidance
MiyaginoGuidance
JinmakuGuidance
OitekazeGuidance
TatsunamiGuidance
KumegawaGuidance
ShikoroyamaGuidance
KiseSCIC, Guidance
SadogatakeSCIC, Guidance
OtakeSCIC, Guidance
MusashigawaSCIC, Guidance
MinatoShimpan, Guidance
TamanoiShimpan, Guidance
OnarutoShimpan, Guidance
KokonoeShimpan, Guidance
KataonamiShimpan, Guidance
AsakayamaShimpan, Guidance
TatekawaShimpan, Guidance
TagonouraShimpan, Guidance
UrakazeShimpan, Guidance
TakenawaShimpan, Guidance, Social Contribution
FutagoyamaShimpan, Guidance
AzumazekiShimpan, Guidance, Social Contribution
HanaregomaShimpan, Guidance, Social Contribution
IsenoumiRegional Basho (Osaka), Guidance, KHO
FujiganeRegional Basho (Osaka), Guidance
ShiratamaRegional Basho (Osaka), Guidance
HatachiyamaRegional Basho (Osaka), Guidance, Social Contribution
TatsutayamaRegional Basho (Nagoya), Guidance, KHO
WakamatsuRegional Basho (Nagoya), Guidance
WakafujiRegional Basho (Nagoya), Guidance
IwatomoRegional Basho (Nagoya), Guidance, Social Contribution
TamagakiRegional Basho (Fukuoka), Guidance
YamawakeRegional Basho (Fukuoka), Guidance
MihogasekiRegional Basho (Fukuoka), Guidance, Social Contribution, KHO
IkazuchiRegional Basho (Fukuoka), Guidance
IrumagawaJungyo, Guidance
EdagawaJungyo, Guidance
OnoeJungyo, Guidance
TanigawaJungyo, Guidance
SendagawaJungyo, Guidance, Shimpan
ShikihideJungyo, Guidance
MatsuganeJungyo, Guidance
AsahiyamaShimpan, Jungyo, Guidance
HamakazeGate
KatsunouraGate
SekinotoGate, Social Contribution
TakasakiInformation, Guidance, Social Contribution, KHO
NarutoInformation (Press Club)
ShiranuiRegional Basho (Osaka), Guidance, Social Contribution
TatsutagawaJungyo, Guidance
TomozunaShimpan, Guidance
NishiiwaShimpan, Guidance
TakasagoSumo Training School, Guidance (Kimarite)
OtowayamaSumo Training School, Guidance (Kimarite), Social Contribution
OnogawaGuidance, Social Contribution
TokitsukazeGuidance, Social Contribution
KumagataniGuidance, Social Contribution
SHUNIN (OFFICERS)
OshiogawaGuidance
IIN TAIGU TOSHIYORI (ACTING SENIOR OFFICERS)
AraisoInformation (Press Club), Social Contribution
TakekumaInformation (Press Club), Social Contribution, Guidance
HidenoyamaSocial Contribution, Guidance
KakuryuSocial Contribution, Guidance
MagakiGuidance
TOSHIYORI (JUNIOR OFFICERS)
NakagawaShimpan, Guidance
TokiwayamaSCIC, Guidance
AjigawaGuidance
NakamuraGuidance
TateyamaGuidance
ArashioGuidance
KiyomigataGuidance
ChiganouraGuidance, Social Contribution
MatsuchiyamaGuidance, Social Contribution
YamashinaGuidance, Social Contribution
KasugayamaGuidance, Social Contribution
SanoyamaGuidance
TOSHIYORI KARIKABU (JUNIOR OFFICERS - KABU ON LOAN)
FuriwakeJungyo, Guidance, Social Contribution
DekiyamaGuidance, Social Contribution
KitajinGuidance, Social Contribution
OtowayamaGuidance, Social Contribution
IzutsuGuidance
KimigahamaGuidance
KiriyamaGuidance
SANYO (CONSULTANTS - RE-EMPLOYED OYAKATA AT AGE 65-70)
OshimaLifestyle Guidance (Education)
OyamaLifestyle Guidance (Education), Guidance (Kimarite)
MinezakiGuidance
MinatogawaSCIC, Guidance
HYOGIIN (COUNCILLORS)
Ikenobo YasukoExternal Councillor
Ebisawa KatsujiExternal Councillor
Takino KinyaExternal Councillor
Kimura KeijiExternal Councillor
Morita Takeo (former Fujinokawa)Internal Councillor
Ishida Yoshikazu (former Washuyama)Internal Councillor
Ozuka Hajime (former Asanosho)Internal Councillor