The 1956 World Judo Championships were the 1st edition of the World Judo Championships, and were held at the Kuramae Kokugikan in Tokyo, Japan on May 3, 1956.
References
1956 World Judo Championships Wikipedia(Text) CC BY-SA
The 1956 World Judo Championships were the 1st edition of the World Judo Championships, and were held at the Kuramae Kokugikan in Tokyo, Japan on May 3, 1956.