Judo History

Judo is derived from Jujutsu. It was created by Professor Jigoro Kano who was born in Japan on October 28, 1860. You can find more information about Judo history here or here.

Philosophy and Principles

The aim of judo is to utilize physical and mental strength most effectively. More about philosophy here.

The basic principles of judo are easy to grasp and are essential for the person studying the technique of judo. More about principles here and here.

Dojo (Judo Club)

The word Dojo has many meanings, such as exercise hall, practice hall or place of learning the way. Learn more about the Traditional Japanese Dojo here. Find Judo Clubs Worldwide here.

Judogi, Uniforms, Kimono

Judogi is the formal Japanese name for the traditional uniform used for Judo practice and competition. Here is some info about competition Judogi and places to buy it. Part of the judogi is the belt, here is how you can tie your belt and video. Also learn how you can fold you gi here.

Belts and Ranks

Achievement in Judo is recognized by a series of ranks. Learn more about traditional Judo ranks here and what does black belt really mean.

Sansei (teacher), Bowing and Sitting

Sansei. The term sensei includes several levels of meaning. Some martial artists equate it with “master”, but this is a meaning that is not used much in Judo circles. 10 things you should know about your Sansei.

Bowing. One of the very first items of etiquette which the Deshi (student) must learn is when they enter or leave any Dojo, they must perform a Ritsu Rei (standing bow) in and out of the Dojo.

Sitting. When in any Dojo you are to remain seated in the correct Seiza (kneeling seated) unless the Sensei tells you to sit some other way.

Judo Rules

Find original Kodokan rules here, official International Judo Federation rules here and article about evolution of rules in Judo. Also here is a simple Competition guide and info about what to expect at a tournament.

Referee and Penalties

Find all Referee signals here. And list of main competition penalties here.

FAQ and Vocabulary

Questions and answers about Martial arts, Judo, Kodokan, and more.