The Belgian Society for Operations Research (ORBEL) is the professional non-profit society for the scientific field of Operations Research in Belgium.

[2] ORBEL was created in 1961 with the aim of promoting the development of Operations Research and Mathematical Programming in Belgium, both from a methodological point and an applied research point of views.

Currently (2016), ORBEL has over 100 members - both professors and researchers from universities, as well as professionals working in industry or government.

Until 2001, ORBEL was responsible for the publication of the scientific journal JORBEL, the Belgian Journal of Operations Research, Statistics, and Computer Science.

Once a year, usually at the end of January, ORBEL organizes a scientific conference, attended by about 120 participants.