List of Japanese organizations
The following is a list of organizations in Japan, pertaining to Japanese mahjong.
| Organization | Kanji | Inception | Member count |
|---|---|---|---|
| 101 Kyougi Renmei | 「１０１競技連盟」 | ||
| Japan Professional Mahjong League | 日本プロ麻雀連盟 | ||
| Mahjong Union | |||
| Nihon Pro Mahjong Kyoukai | |||
| Real Mahjong Unit | |||
| Saikouisen Nihon Pro Mahjong | |||
| ZOO |