Japan Sumo Association (Nihon Sumo Kyokai)

Sole governing body of professional sumo in Japan; organizes the six annual grand sumo tournaments (honbasho) and oversees the ranked hierarchy culminating in yokozuna.

📋Claimed

1 sport0 members

🏛️National Federation🌍Jurisdiction: Japan

www.sumo.or.jp

Managed Sports

🏛️Official Rulebook

Sumo

2026 Nihon Sumo Kyokai Regulations — Japanese professional sumo; six annual 15-day basho tournaments under strict ranked hierarchy (yokozuna apex)

🏛️Official

Professional Sumo (大相撲, ōzumō) is Japan's national sport, governed by the Nihon Sumo Kyokai (Japan Sumo Association, founded 1925) as the sole professional sumo authority worldwide. Sumo wrestlers (rikishi) compete in six annual 15-day tournaments (basho): January (Tokyo), March (Osaka), May (Tok...

Combat Sports11 topics2026-01-01

Browse All Sports