This is an ambispective, observational, multicenter and multicohort study, targeting patients with NSCLC initiating approved drugs developed by AZ or as part of an AZ alliance, in the participating countries, as monotherapy or in combination at any stage of disease. Three cohorts are designed, based on the stage of NSCLC (resectable, unresectable and metastatic). The multicohort study is modular in design. Specific modules will be set up separately to assess each new indication of drugs developed by AZ or as part of an AZ alliance once European marketing authorization (MA) has been granted and made available in the participating countries. Patients will be enrolled in the study if they have received (retrospective), receive (retrospective and prospective) or will receive (prospective) approved drugs developed by AZ or as part of an AZ alliance according to the eligibility criteria. Treatment plan and decision are made independently by each treating physician prior to inclusion in this study.