Editorial: OR for sustainable development.

The presented issue concerns publications presented as part of the Workshop 2018 of the EURO Working Group on Operational Research for Development (EWG-ORD) held in Complutense University of Madrid (Spain), July 5-7. This editorial presents an introduction on sustainable development and the Sustainable Development Goals. It contains short descriptions of the research area presented in individual publications, highlighting their contributions to the achievement of the Sustainable Development Goals.