4OR - A Quarterly Journal of Operations Research is a peer-reviewed scientific journal that was established in 2003 and is published by Springer Science+Business Media.

It is a joint official journal of the Belgian, French, and Italian Operations Research Societies.

The journal publishes research papers and surveys on the theory and applications of Operations Research.

The Editors-in-chief are Yves Crama (University of Liège), Michel Grabisch (Pantheon-Sorbonne University), and Silvano Martello (University of Bologna).

The journal is abstracted and indexed in the following databases:[1] According to the Journal Citation Reports, the journal has a 2021 impact factor of 1.763.