| General Information | info@sjji.org |
| Japan Staff | japan-staff@sjji.org |
| President | president@sjji.org |
| vice-President | vice-president@sjji.org |
| Administration & Treasurer | admin@sjji.org |
| Technical Board | technical@sjji.org |
| Event Director | events@sjji.org |
| Teachers Course Staff | teachercourse@sjji.org |
| Black Belt Exam Committee | exams@sjji.org |
| News Letter Committee | news@sjji.org |
| Merchandise | merchandize@sjji.org |
| Associated Director Belgium | ad-belgium@sjji.org |
| ICT Technical Support Website | ict@sjji.org |
Affiliated with
All Japan Ju-Jitsu Federation
Japan Martial Arts Games Association
Japan Olympic Committee