Moyamoya disease is a rare progressive occlusive disease of the internal carotid arteries, along with the presence of an abnormal capillary network of vessels at the base of the brain. There are few reports regarding moyamoya disease during pregnancy. Since hyperventilation-induced cerebral ischemia and hypertension are provoked by active labor, elective cesarean section has been recommended to avoid neurologic complications for pregnant women with moyamoya disease. The optimal anesthetic management for cesarean section in these patients has not been discussed. We describe two cases of epidural anesthesia for elective cesarean section for patients with known moyamoya disease, which were delivered successfully.