Croatian Operational Research Society (CRORS) actively collaborates with the following OR societies:

International Federation of Operational Research Societies (IFORS)

The International Federation of Operational Research Societies (IFORS) is an umbrella organization comprising the national Operations Research societies of over forty five countries from four geographical regions: Asia Pacific, Europe, North America, South America 

Total membership is over 30,000 persons. IFORS’ mission is to promote Operations Research as an academic discipline and a profession.

Institute For Operations Research and the Management Sciences (INFORMS)

INFORMS is dedicated to promoting best practices and advances in operations research, management science, and analytics. As the field’s largest professional association, INFORMS and its members work to improve operational and decision-making processes, and outcomes.

Association of European Operational Research Societies (EURO)

EURO is the “Association of European Operational Research Societies” and is a regional grouping within IFORS, the “International Federation of Operational Research Societies”. Its aim is to promote Operational Research throughout Europe.

EURO is a non profit association domiciled in Switzerland. Its affairs are regulated by a Council consisting of representatives of all its members and an Executive Committee which constitutes its board of directors. The members of EURO are normally full members of IFORS and comprise the national Operational Research (OR) societies of countries, most of whom are located within Europe. Council meetings are typically held annually, normally in conjunction with the EURO-k or IFORS conferences.