Welcome

Welcome to The International Conference on Operations Research 2025 (OR 2025)

Quantitative approaches for a complex world


Here you can find the Press Release (in German) from Bielefeld University dated August 26, 2025, regarding the conference. The Conference Booklet, the Technical Program, and Instructions for Speakers and Session Chairs can be downloaded under “Program”. The GOR published a Press Release (in German) on the GOR Science Award for Stefan Minner dated September 3, 2025.

The realized conference in figures:

  • 421 Participants from 31 countries of all continents except Antarctica
  • 117 Participants in 2 Dokt!OR Sessions
  • 254 Talks in 77 Regular Parallel Sessions
  • 10 Talks in 3 GOR Award Sessions
  • 3 Plenaries (including GOR Science Award Plenary of Stefan Minner)
  • 9 Semi-Plenaries
  • 4 Sponsors’ Activities (3 Workshops, 1 Lecturer)
  • 3 Social Events

Call for Abstracts

Abstract submission and submission for the Operations Research Proceedings 2025 are CLOSED.


The International Conference on Operations Research, the annual conference of the German Operations Research Society (GOR), looks forward to welcoming you to Bielefeld, Germany.

The OR 2025 is an opportunity for academics, researchers and practitioners to discuss methods and applications of Operations Research, management science, data science and analytics. How can quantitative methods help to find solutions to problems in a closely networked world? This often requires interdisciplinary approaches typical of Operations Research applications.

The conference will take place from September 2-5, 2025 at Bielefeld University. We invite academics, researchers and practitioners from all over the world to participate in this inspiring OR 2025 conference and to submit an abstract and optionally a paper for the proceedings.

We look forward to seeing you in Bielefeld!


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