Association of European Operational Research Societies
The Association of European Operational Research Societies (EURO) is a regional grouping within the International Federation of Operational Research Societies (IFORS) whose aim is to promote operations research throughout Europe.
American Society for Cybernetics
The American Society for Cybernetics (ASC) is an American non-profit scholastic organization for the advancement of cybernetics as a science and the interdisciplinary collaboration and synthesis of cybernetics.
German Operations Research Society
The Gesellschaft für Operations Research (GOR) is the professional non-profit society for the scientific field of Operations Research in Germany.
Dutch Systems Group
The Dutch Systems Group, or Netherlands Society for Systems Research or Systeemgroep Nederland, is a society in the Netherlands for systems theory, and its applications.
Belgian Society for Operations Research
The Belgian Society for Operations Research (ORBEL) is the professional non-profit society for the scientific field of Operations Research in Belgium.
Croatian Operational Research Society
The Croatian Operational Research Society (CRORS) is the professional non-profit society for the scientific field of Operations Research in Croatia.
Italian Operations Research Society
The Associazione Italiana di Ricerca Operativa (AIRO) – Optimization and Decision Sciences - is the professional non-profit society for the scientific field of Operations Research in Italy.
Société française de Recherche Opérationnelle et Aide à la Décision
The French Operations Research & Decision Support Society (in French: Société française de Recherche Opérationnelle et d’Aide à la Décision - ROADEF) is a professional non-profit society that aims to promote the scientific field of Operations Research (OR) and Decision Support (DS) in France.
International Society for the Systems Sciences
The International Society for the Systems Sciences (ISSS) is a worldwide organization for systems sciences.
Finnish Operations Research Society
The Finnish Operations Research Society (FORS) (in Finnish, Suomen Operaatiotutkimusseura ry) is a professional non-profit society for the scientific field of Operations Research in Finland.
Hungarian Operations Research Society
The Hungarian Operations Research Society (HORS) is the professional non-profit society for the scientific field of Operations Research in Hungary.
Austrian Society of Operations Research
The Österreichische Gesellschaft für Operations Research (OeGOR) (Austrian Society of Operations Research) is the professional non-profit society for the scientific field of Operations Research in Austria.
Hellenic Society for Systemic Studies
The Hellenic Society for Systemic Studies (Greek: Ελληνική Εταιρεία Συστημικών Μελετών, ΕΕΣΜ) is a scientific non-profit society that was established in 2003.
International Council on Systems Engineering
The International Council on Systems Engineering (INCOSE; pronounced in-co-see) is a non-profit membership organization dedicated to the advancement of systems engineering and to raise the professional stature of systems engineers.