The 24th Conference of the International Federation of Operational Research Societies

12-17 July 2026, Vienna, Austria

Decision Support for a Sustainable World

Main Building of the University of Vienna

copyright by: Gebhard Sengmueller

The International Federation of Operational Research Societies (IFORS)

is a 60-year-old organisation which is currently composed of 50 national societies. Its origins date to 1955, when the vice-president of the Operations Research Society of America (ORSA) sent a proposal for an international conference to the secretary of the UK society, the Operational Research Society (ORS). The French Society, SOFRO, was added as a sponsoring society to what would be the first in a line of triennial conferences: the 1957 Oxford Conference, described by Maurice Kirby as the fifth of the seven defining moments in OR history.

Vienna is one of the leading meeting destinations in the world

The city’s location in the heart of Europe, excellent infrastructure, short distances and exceptional ‘livability’ are only some of its many strengths. In addition, Vienna boasts high hospitality standards and an outstanding range of art and cultural events.

The University of Vienna

is the oldest university in the Germanspeaking area and the largest university in Austria. As “universitas litterarum”, the University of Vienna offers a broad range of subjects which promotes the development of new and innovative research areas and fosters strong links between existing research areas. The University of Vienna is located in the city centre. The majority of the lecture halls and conference areas are located in the Main Building of the University of Vienna. Additional lecture halls and seminar rooms are located at the Juridicum and Kolingasse. All these buildings are located within 4-5 minutes walking distance.

Important dates & general information

1 December 2025
Opening of abstract submissions

15 March 2026
Deadline for abstract submissions

25 April 2026
Early bird registration deadline

25 April 2026
Final registration deadline for authors