IEEE International Workshop on Requirements Engineering 2013 (IWoRE’13) is a two-day workshop aiming to provide a forum for academics and practitioners to debate current international issues and challenges in the broad area of Requirements Engineering which is critical for future business success. We encourage works that suggest methodologies, techniques and strategies to improve the RE process (discovering, documenting, negotiating, and managing) since a recent survey showed that the principal problem areas in software development are the requirements specification and the management of the customer requirements. Submissions should focus on novel techniques and the way in which they contribute to making requirements engineering a more mature and soundly-based discipline.