| International Sumo Federation | |
| Abbrev: | IFS |
| Logosize: | 200px |
| Sport: | Sumo |
| Jurisdiction: | International |
| Founded: | 1992 |
| Aff: | ARISF |
| Affdate: | 1998 |
| Headquarters: | 1-15-20 Hyakunincho Shinjuku, Tokyo, Japan |
| President: |  Kazufumi Minami |
| Vicepresident: | Mitsuko Yanai Yiu Cheung Mak |
| Secretary: | Fumihiko Nara |
| Url: | www.ifs-sumo.org/ |
The International Sumo Federation (IFS) is the largest international governing body of sport Sumo with over 87 member countries. It was formed in 1992 and is the only Sumo organization recognised by the International Olympic Committee and World Anti-Doping Agency.
International Sumo Federation has 87 established National Sumo Federations.[1]
International Sumo Federation encourages the sport's development worldwide, including holding international championships. A key aim of the federation is to have Sumo recognized as an Olympic sport. Accordingly, amateur tournaments are divided into weight classes.
| Weight class | Men | Women | Jr. Men* | Jr. Women* | |
|---|---|---|---|---|---|
| Open | Unrestricted | Unrestricted | Unrestricted | Unrestricted | |
| Heavyweight | ≥115 kg | ≥80 kg | ≥100 kg | ≥75 kg | |
| Middleweight | 85−115 kg | 65–80 kg | 80–100 kg | 60–75 kg | |
| Lightweight | <85 kg | <65 kg | <80 kg | <60 kg |