The International Sumou Federation is a World organization, uniting federations and continental unions practicing Amateur Sumou.
It was formed in the early 90's.
Yearly it organizes the World Sumou Championships, World Shinzumou Championships, and Junior World Sumou Championships.
It consists of continental Amateur Sumou unions, which then in turn organize individual national Amateur Sumou federations. Each national federation is a member of the International Sumou Federation directly.
The continetal unions organized in the International Sumou Federation are: