Liver hydatid cysts are known to rupture into the biliary tree, but acute pancreatitis is a rare complication of intra-biliary rupture. Intra-biliary rupture was first reported in 1928 by Dew. Intra-biliary rupture is a serious complication of hepatic hydatid cysts. The incidence varies from 1% to 25% in adult patients. In our case, we aimed to show the migration of the material of a hepatic hydatid cyst to the common bile duct and the impaction of hydatid membrane in the papillary orifice, which may cause acute pancreatitis. Parasitic infections should be considered as a differential diagnosis in patients with acute biliary pancreatitis.