Esophageal diverticula are common problems associated with abnormal motility or extrinsic anatomic forces. In this case, an aberrant right subclavian artery, one of the most common aortic arch anomalies, produced extrinsic pressure on the esophagus leading to the formation of a traction diverticulum. A 59-year-old African American Female presented to the emergency department with a history of dysphagia with intolerance to both solids and liquids. A CT scan revealed a large upper esophageal diverticulum and an aberrant right subclavian artery coursing posterior to the esophagus near the neck of the diverticulum. Also noted was a smaller, more inferior diverticulum. After a course of nutritional support, the patient underwent ligation of the aberrant subclavian vessel and excision of the esophageal diverticula. She had an extended post-operative course with eventual resumption of oral intake and return to normal function. It is likely that the patient's congenital aberrant subclavian artery led to the formation of a traction diverticulum in the esophagus and was the ultimate cause of her symptomatic profile. Examination revealed a true diverticulum with all esophageal layers present. Treatment of such a cause of esophageal diverticula uses the same principles required for all esophageal diverticula - removing the underlying etiology and, if necessary due to symptoms, resecting the diverticulum.