We report a 14-months-old infant who had obstructive jaundice caused by idiopathic fibrosing pancreatitis Ultrasongraphy and abdominal computed tomography showed dilatation of the intrahepatic ducts, common bile duct, and the pancreatic duct. Diffuse swelling of the pancreas was also noted on CT. At laparotomy, the head portion of the pancreas revealed a stony hard consistency, and proliferation fo fibrotic tissue was confirmed pathologically. Idiopathic fibrosing pancreatitis is a very rare disease entity in childhood, but should be considered in the differential diagnosis of obstructive jaundice in children who demonstrate bile duct and pancreatic duct dilatation and/ or diffuse pancreas swelling.