Association football | association football | European Union | Forward (association football) | Goalkeeper (association football) | Defender (association football) | European Parliament | National Basketball Association | Member of the European Parliament | European Commission | American Association for the Advancement of Science | Association of Tennis Professionals | American Library Association | World Boxing Association | National Collegiate Athletic Association | American Association | American Heart Association | European Space Agency | National Association of Intercollegiate Athletics | National Rifle Association | International Development Association | National Association for the Advancement of Colored People | European | American Bar Association | Philippine Basketball Association | European Court of Human Rights | American Medical Association | European Court of Justice | International Air Transport Association | World Hockey Association |
Dagan is a founding member of the Board of Trustees of Bonn International School (BIS) as well as board member of the Association of the Foreign Press in Germany (VAP) and of the Brussels-based Association of European Journalists.