Introduction In this study, we aimed to evaluate the complications of carotid artery stenting in patients with extracranial carotid artery stenosis, retrospectively. Materials and Methods Complications such as stroke, death, restenosis in the rst 30 days and 1 year a er the CAS procedure, cerebral hyperperfusion and stent thrombosis/occlusion in the perioperative rst 24 hours and rst 30 days were evaluated. Results Of the 205 CAS procedures, complications developed in 12 patients. e complication rate for the rst 30 days a er the procedure was 4,87%, and at the end of the rst year, it was 5,85%. Of the 12 patients with complications, 8 had carotid stenosis of ≥90%. Death occurred in 4 of 195 patients with carotid artery stenosis. e mortality rate within the rst 30 days and during the 1-year follow-up period was 1,53% and 2,05%, respectively. Ischemic stroke occurred in 6 of 195 patients with carotid artery stenosis. A er the rst 30 days and one year follow-up, ischemic stroke had occurred in 3,07% of patients. Stent thrombosis/occlusion rate was 4,87% in 205 CAS procedures, and 7 of them occurred in the perioperative rst 24 hours and another 3 occurred within the rst 30 days. Restenosis rates were 0,48% and 0,97% at 6 months and the rst year, respectively. Conclusion It has been observed that the incidence of complications in the CAS procedure is higher in symptomatic cases requiring emergency endovascular treatment or in cases with a carotid artery stenosis rate of 90% or more. In addition, the most common CAS complication in our study was found to be carotid artery stent thrombosis/occlusion.