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: 2015 Jul 01).

RIJICHO (CHIEF EXECUTIVE DIRECTOR)
HakkakuManaging Director
RIJI (EXECUTIVE DIRECTORS)
OgurumaOperations Director, Chairman Of The National Supporters' Committee, Museum Committee Member, KHO
TakanohanaJungyo Director
KagamiyamaGeneral Enterprises Director, Guidance Director, Lifestyle Guidance Director, SCIC Chairman, CMT Director, Museum Committee Member, KHO
IsegahamaRegional Basho Director (Osaka)
NishonosekiShimpan Director, Chairman Of Doping Committee, Shindeshi Examination Supervisor
SakaigawaRegional Basho Director (Fukuoka)
KasuganoInformation Director, Security Head Office Director, Museum Committee Member, KHO
DewanoumiRegional Basho Director (Nagoya)
YamahibikiSumo Training School Director
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
Kamiyama ToshioExternal Non-Executive Director, Auditor
Kajiki ...External Non-Executive Director, Auditor
FUKURIJI (NON-EXECUTIVE/VICE DIRECTORS)
TamanoiJungyo Vice-Director, Security Head Office Vice-Director, Shindeshi Examination Supervisor
ShibatayamaInformation Vice-Director, Jungyo Vice-Director, Security Head Office Vice-Director, Shindeshi Examination Supervisor, KHO
FujishimaOperations Vice-Director, Shimpan Vice-Director, Vice-Chairman Of Doping Committee, Museum Committee Member, Shindeshi Examination Supervisor, KHO
YAKUIN TAIGU IIN (EXECUTIVE OFFICERS)
TakasagoSCIC Vice-Chairman
TomozunaShimpan Vice-Director, Vice-Chairman Of Doping Committee, Shindeshi Examination Supervisor
MichinokuGuidance Vice-Director
YamashinaGeneral Enterprises Vice-Director, KHO
IIN (SENIOR OFFICERS)
KabutoyamaSumo Training School, Guidance (Kimarite)
SekinotoSumo Training School, Guidance (Kimarite)
InagawaSumo Training School, Guidance (Kimarite)
OyamaGuidance (Kimarite)
ArashioGuidance
MinezakiGuidance
KitajinGuidance
MiyaginoGuidance
OitekazeGuidance
KumegawaGuidance
ShiratamaGuidance
TakekumaGuidance
AsahiyamaGuidance
TakashimaSCIC, Guidance
IzutsuSCIC, Guidance
IsenoumiSCIC, Guidance
SadogatakeSCIC, Guidance
MusashigawaSCIC, Guidance
JinmakuShimpan, Guidance
IrumagawaShimpan, Guidance
NishikidoShimpan, Guidance
MinatoShimpan, Guidance
ShikoroyamaShimpan, Guidance
TakadagawaShimpan, Guidance
OnarutoShimpan, Guidance
KokonoeShimpan, Guidance
KataonamiShimpan, Guidance
AsakayamaShimpan, Guidance
TokitsukazeShimpan, Guidance
AzumazekiShimpan, Guidance
TatekawaShimpan, Guidance
TagonouraShimpan, Guidance
UrakazeShimpan, Guidance
TakenawaShimpan, Guidance
ShikihideShimpan, Guidance
OtowayamaShimpan, Guidance
NakagawaRegional Basho (Osaka), Guidance
FujiganeRegional Basho (Osaka), Guidance
NakadachiRegional Basho (Osaka), Guidance
HatachiyamaRegional Basho (Osaka), Guidance
TakasakiRegional Basho (Osaka), Guidance, KHO
TatsutayamaRegional Basho (Nagoya), Guidance, KHO
ChiganouraRegional Basho (Nagoya), Guidance
WakamatsuRegional Basho (Nagoya), Guidance
WakafujiRegional Basho (Nagoya), Guidance
HanakagoRegional Basho (Fukuoka), Guidance
TamagakiRegional Basho (Fukuoka), Guidance
YamawakeRegional Basho (Fukuoka), Guidance
MatsuganeRegional Basho (Fukuoka), Guidance
MihogasekiRegional Basho (Fukuoka), Guidance, KHO
OnomatsuJungyo, Guidance
TatsunamiJungyo, Guidance
KiseJungyo, Guidance
EdagawaJungyo, Guidance
TanigawaJungyo, Guidance
SendagawaJungyo, Guidance
HamakazeGate
KatsunouraGate
SHUNIN (OFFICERS)
OnoeJungyo, Guidance
IkazuchiJungyo, Guidance
FuriwakeInformation (Press Club)
HanaregomaShimpan, Guidance
IwatomoRegional Basho (Nagoya), Guidance
IIN TAIGU TOSHIYORI (ACTING SENIOR OFFICERS)
NarutoInformation (Press Club)
TOSHIYORI (JUNIOR OFFICERS)
ShiranuiSumo Training School, Guidance (Kimarite)
TatsutagawaJungyo, Guidance
OshimaGuidance
NishiiwaGuidance
MagakiGuidance
TOSHIYORI KARIKABU (JUNIOR OFFICERS - KABU ON LOAN)
KiyomigataGuidance
KimigahamaGuidance
OnogawaGuidance
SanoyamaGuidance
AraisoGuidance
SANYO (CONSULTANTS - RE-EMPLOYED OYAKATA AT AGE 65-70)
TateyamaLifestyle Guidance
TokiwayamaLifestyle Guidance
MatsuchiyamaGate
DekiyamaInformation
KiriyamaShimpan, Lifestyle Guidance
 
HYOGIIN (COUNCILLORS)
Ikenobo YasukoExternal Councillor
Ebisawa KatsujiExternal Councillor
Konishi HikoeExternal Councillor
Sato Tadahiro (Otake)Internal Councillor, Guidance
Senge TakamasaExternal Councillor
Takeuchi Masato (Futagoyama)Internal Councillor, Guidance
Minami Tadamitsu (Minatogawa)Internal Councillor, Guidance