Human anisakiasis may occur after ingestion of raw marine fish infected with the nematode larvae of Anisakidae. Clinical symptoms such as cramping abdominal pain, nausea, vomiting, diarrhea and epigastric fullness, usually develop within 12 hours after having eaten infected raw sea fish. Anisakiasis is most commonly found in the stomach, and is rarely identified in the small intestine, large intestine, and esophagus. We report two cases of of anisakiasis, one with concurrent invasion of the stomach and esophagus, and the other case with esophageal anisakiasis. Both were treated by endoscopic extraction of the larvae. (Korean J Gastrointest Endosc 2006;32:116119)