The Saudi CABG Audit and Registry (SCAR) is a prospective, multicenter national clinical quality registry designed to systematically collect perioperative and long-term outcome data for all patients undergoing coronary artery bypass grafting (CABG) in Saudi Arabia. The registry will begin with a pilot phase in selected tertiary cardiac centers and will progressively expand to national coverage. SCAR captures detailed information on patient demographics, cardiac status, operative techniques, postoperative outcomes, and 1-year follow-up, including patient-reported quality-of-life measures (EQ-5D and SF-36). The aim is to establish a standardized national platform for benchmarking, quality improvement, and real-world evidence generation to support clinical decision-making and health policy development in cardiac surgery. Data are collected prospectively through secure electronic systems, anonymized before central storage, and analyzed using standardized definitions aligned with international registries such as STS and E-CABG.