# Judo

Judo is a Japanese grappling art and Olympic sport built on throws (nage-waza), pins, and submissions (newaza), practiced in the judogi.

*Published: 2026-09-11 · Updated: 2026-09-11*

## Key Takeaways

- Judo is a Japanese grappling art and Olympic sport built on throws (nage-waza), pins, and submissions (newaza), practiced in the judogi.
- This page is a live encyclopedia hub—definition, mechanics, and how the style relates on Martial Index.
- Train under qualified instruction; tap early in grappling contexts.

## What Is Judo?

Judo (“the gentle way”) is a modern Japanese martial art and Olympic sport founded by Jigoro Kano. Competition emphasizes clean throws for ippon, as well as pins (osaekomi) and certain joint locks and chokes on the ground.

The judogi (jacket and pants) is integral: grips on the lapel and sleeve create the kuzushi (off-balancing) that sets major throws such as seoi-nage, uchi-mata, and osoto-gari.

## How Judo Works

Standing judo seeks a decisive throw. If the bout continues on the ground, newaza covers pins, arm locks (notably juji-gatame / armbar), and chokes. Sport rules limit time and legal techniques differently than Brazilian jiu-jitsu—especially regarding leg locks and engagement incentives.

Historically and technically, BJJ grew from judo newaza influence. Many BJJ positions and submissions share names or mechanics with judo, even when sport strategies diverge.

## What You’ll Find Here

This hub is the live judo introduction on Martial Index. Dedicated judo term pages are not published yet. Closely related live BJJ pages that share grappling DNA:

- Guard and Closed Guard — newaza bottom games evolved heavily in BJJ
- Rear Naked Choke — related to hadaka-jime structures
- Brazilian Jiu-Jitsu · Wrestling

## The Bottom Line

© 2026 Martial Index. Martial arts encyclopedia for every fighting art. Train under qualified instruction; tap early.

## FAQ

### Is judo the same as Brazilian jiu-jitsu?

No. They share ancestry and many techniques, but sport incentives differ. Judo prioritizes throws and has distinct ground rules; sport BJJ often prioritizes prolonged ground fighting and a wider submission meta.

### Why the heavy jacket?

The judogi enables sleeve and lapel grips that define classical throwing mechanics and many chokes. No-gi grappling removes those handles and changes the game.

### Do judo players learn guard like BJJ?

Judo includes newaza, but modern sport judo often spends less time in prolonged open-guard battles than sport BJJ. Cross-training is common.

### How does judo show up in MMA?

Throws, trips, and clinch entries transfer—sometimes modified without the gi. Ground submissions overlap with BJJ when the fight stays down.

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