Three cases of epiphrenic esophageal diverticulum, treated successfully by surgery, were reported. Case 1 was a 71-year-old female associated with gastroesophageal reflux and esophageal dysmotility. Case 2 was a 40-year-old female associated with gastroesophageal reflux but no esophageal dysmotility. Case 3 was a 51-year-old male who showed no abnormality in esophageal pH and manometry, and esophageal scintigraphy. Resection of the diverticulum was performed in three cases and Belsey's fundoplication was added in case 1 and 2. In the patients with epiphrenic diverticulum, concomitant esophageal dysfunction can be the cause of the diverticulum and symptom. It is essential in deciding the surgical procedure to evaluate the esophageal function in the patients with epiphrenic esophageal diverticulum.