Résumé : Stage III non-small cell lung cancer (NSCLC) is a heterogenous disease requiring a multimodality treatment approach. For resectable stage III NSCLC, treatments incorporating surgery might be beneficial, however, a definition on resectable disease is lacking. The European Organization for the Treatment and Research of Cancer (EORTC) Lung Cancer Group initiative aims to provide a uniform definition of resectable stage III NSCLC. As part of this initiative, we conducted a systematic review to identify definitions on resectability; the medical specialties involved for making the decision and the required work-up aiding the decision.