Annular pancreas (AP) is a rare congenital anomaly of the pancreas that is characterized by the presence of duodenum that encircled by pancreatic tissue. Very few cases of pancreatitis due to this anomaly have been reported previously. Annular pancreas can be diagnosed by Upper Gastrointestinal (UGI) direct graphy series, Computerized Tomography (CT) scan, Magnetic Resonance Cholangiopancreatography (MRCP), Endoscopic Retrograde Cholangiopancreatography (ERCP) or during surgical procedure. The treatment of pancreatitis due to annular pancreas is usually surgical. In this case report we present a patient with pancreatitis due to AP who has treated without surgical procedure.