SAFRO 2202 ALG-Lung Cancer Registry is a prospective, multicenter, non-interventional observational study conducted across 21 public and university hospitals in Algeria. The objective is to characterize the epidemiological, clinical, pathological, molecular, and therapeutic features of patients diagnosed with lung cancer, including non-small cell lung cancer (NSCLC), small cell lung cancer (SCLC), and carcinoid tumors. Eligible participants are adults aged 18 years or older, diagnosed at the time of inclusion or within the previous 12 months, and fully managed in oncology or pulmonology departments. Data are collected during routine clinical care and recorded in a secure electronic case report form (eCRF). No protocol-mandated interventions or study-specific visits are required. The study plans to enroll approximately 1,500 patients per year over a 30-month period. Primary outcomes include demographic and clinical profiles, tumor histology, molecular markers, staging at diagnosis, and treatment strategies (surgery, radiotherapy, chemotherapy, targeted therapy, and immunotherapy). Secondary outcomes include treatment-related toxicities, objective response rate (ORR), progression-free survival (PFS), time to treatment discontinuation (TTD), and overall survival (OS). The findings from this registry will provide real-world evidence to support national health planning, improve lung cancer management, and guide future clinical and public health initiatives in Algeria.