| California Sumo Association | | Contains overview of sumo within the United States and the sport's bid to become an Olympic sport. Also, features news, events calendar, history, photo gallery, champions, and links. |
| Cibersumo | | Contains information on tournaments, wrestlers, news, and history. |
| Czech Sum Union | | Promotes sumo by expanding amateur and starting professional sumo in the Czech Republic and European communities. Features tournament schedule and results, photo gallery, videos, classifications, and links. |
| European Sumo Union | | The official website for sumo wrestling in Europe with information on events, results and pictures. |
| Infrequently Asked Questions: Sumo | | Heights and weights, salaries and allowances, details of all tournaments held since 1909. Plus many other questions answered that were never asked before. |
| Sumo Information | | Features a comprehensive FAQ that details various aspects for the sport, from historical to technical. Also includes results of past events, and searchable statistics. |
| Sumo Shimpo | | E-zine and that serves as the voice of Southern California Sumo Kyokai. Contains monthly archive of news, tournaments and photos along with contact information. Based in Long Beach. |
| Sumo Talk | | Features columns, analysis, results, and trivia on professional sumo. Also contains details on the rules and history of the sport. |
| SumoForum.net | | Includes several topics for discussion and reference material. |
| The American Sumo Association | | Educating current and future fans on the Japanese sport of Sumo. Includes history, rules, rankings and American competitors. |
| Unusual Sumo photos | | Humorous and light-hearted pictures from the official Sumo Association calendar 2000 |
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