- 中国黑白棋联盟(China Othello Federation)
- China Othello Federation (In simplified Chinese)
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- 香港黑白棋會
- Hong Kong Othello Association (In traditional Chinese)
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- Taiwan Othello Federation
- Taiwan Othello Federation (In traditional Chinese)
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- World Othello Federation
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- World Othello Championships
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- Club Argentino de Othello
- Argentinian Othello Club (In Spaish)
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- Australian Othello Federation
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- Othello Belgium
- Belgian Othello Association
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- Federação Brasileira de Othello
- Brazilian Othello Federation (In Portuguese)
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- British Othello Federation
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- Canadian Othello Association
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- Česká Federace Othello
- Czech Othello Federation (In Czech)
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- Dansk Othello Forbund :: Danish Othello Association
- Danish Othello Association (In Danish)
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- Othello Suomi
- Finnish Othello Association (In Finnish)
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- Fédération Française d'Othello
- French Federation of Othello (In French)
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- Othello Club Deutschland
- German Othello Club (In German)
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- Greek Othello Federation / Ελληνική Ομοσπονδία Othello
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- Indian Othello Federation
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- Iran Othello Federation
- Iranian Othello Federation (In Persian)
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- איגוד אותלו בישראל
- Israel Othello Association (In Hebrew)
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- Federazione Italiana Gioco Othello (Reversi)
- Italian Othello Federation (In Italian)
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- 日本オセロ連盟 Japan Othello Association
- Japan Othello Association (In Japanese)
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- Othello! JAPAN
- (In Japanese)
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- KoA 한국 오델로 협회
- Korea Othello Association (In Korean)
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- Malaysia Othello Association
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- NOV: Nederlandse Othello Vereniging
- Dutch Othello Association (In Dutch)
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- Norges Othelloforbund
- Norwegian Othello Federation (In Norwegian)
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- Polska Federacja Othello
- Polish Othello Federation (In Polish)
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- Российскую Федерацию Отелло
- Russian Othello Federation (In Russian)
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- Othello Organisation (Singapore)
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- Asociación de Jugadores de Othello (オセロ)
- Spanish Othello Association (In Spanish)
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- Svenska Othelloförbundet - Swedish Othello Association
- Swedish Othello Federation (In Swedish)
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- THAI OTHELLO | เว็บไซต์ไทยโอเทลโล่
- Thailand Othello Association (In Thai)
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- The US Othello Association
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- Worldwide Othello News
- Othello News keeps you informed about tourneys organised by National Othello Federations, the European Grand Prix and the World Othello Championship.
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- The Othello Wiki Book Project
