European Journal of Operational Research

*European Journal of Operational Research*
Discipline	Operational research
Language	English
Edited by	Roman Słowiński; Emanuele Borgonovo; José-Fernando Oliveira; Steffen Rebennack; Ruud Teunter; Mike Yearworth
Publication details
History	1977–present
Publisher	Elsevier on behalf of the Association of European Operational Research Societies
Frequency	24/year
Impact factor	6.0 (2024)
Standard abbreviations;
ISO 4	Eur. J. Oper. Res.
MathSciNet	European J. Oper. Res.
Indexing;
CODEN	EJORDT
ISSN	0377-2217;
LCCN	77643872
Links
	Journal homepage;

The European Journal of Operational Research (EJOR) is a peer-reviewed academic journal in operational research. It was founded in 1977^[1] by the Association of European Operational Research Societies,^[2] and is published by Elsevier, with Roman Słowiński as its Co-ordinating Editor-in-Chief.^[3] Currently, it publishes at a rate of 24 issues per annual volume, with approximately 250 pages per issue.

It is a top journal (CABS 4; ABDC A*) and the primary journal for Europe-based studies of operational research. It is the world's largest operational research journal.^[4] For most years since 1999 it has been ranked by SCImago Journal Rank as a top-quartile journal in information systems and management, management science and operational research, and modelling and simulation.^[5]