Liposarcoma is a mesenchymal malignant tumor which occurs most frequently in the limbs, retroperitoneum, and trunk: Although primary liposarcoma may occur anywhere adipose tissue is found, visceral locations are only rarely represented. Moreover, primary gastric liposarcoma is extremely rare. So, only a few cases of primary gastric liposarcoma have been reported in English literature. We describe the case of a 43-year-old woman presenting with melena, epigastric pain, general weakness. Esophagogastroduodenoscopy (EGD) showed a 6x4x3 cm sized-mass which was located on the posterior gastric wall. By endoscopic ultrasonography and abdominal CT scan, we suspected gastric lipoma and performed the laparoscopic transgastric tumor resection by eversion method. Finally, it was confirmed as a gastric liposarcoma pathologically. Herein, we present a case of gastric liposarcoma which was resected by laparoscopic transgastric wedge resection.