# Japanese martial arts tournament schedules

> Developing situation record from CLSTR: https://clstr.news/situations/japanese-martial-arts-tournament-schedules
> Updated: 2026-10-30T02:00:00.000Z. Sources: 6. Developments: 2.

The All Japan Judo Federation announced the commencement of ticket sales for the Grand Slam Tokyo 2026 international tournament, which is scheduled for December 5 and 6, 2026, at the Tokyo Metropolitan Gymnasium. 

Following this, the federation released tournament brackets for the 2026 Kodokan Cup All Japan Judo Weight Category Championships, set for November 7 and 8, 2026, at Chiba Gin Arena. This event functions as a selection trial for the Japan national team for the Grand Slam Tokyo 2026. Additionally, the All Japan Karate Federation opened entries for the 54th All Japan Karate Championships and the 5th All Japan Karate Kata Team Championships, scheduled for mid-December 2026.

## Timeline

### 2026-10-30: Japanese martial arts federations announce upcoming 2026 championships

The All Japan Judo and Karate federations have announced schedules and brackets for their respective 2026 national championships.

6 sources. https://clstr.news/cluster/japanese-martial-arts-federations-announce-upcoming-2026-championships

### 2026-10-02: Grand Slam Tokyo 2026 judo tournament ticket sales begin

The All Japan Judo Federation has launched advance ticket sales for the Grand Slam Tokyo 2026 judo tournament, held at the Tokyo Metropolitan Gymnasium in December 2026.

2 sources. https://clstr.news/cluster/grand-slam-tokyo-2026-judo-tournament-ticket-sales-begin

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Cite as: Japanese martial arts tournament schedules. CLSTR, https://clstr.news/situations/japanese-martial-arts-tournament-schedules