Primary mesenteric liposarcoma is a rare malignant tumour of mesenchymal origin. Under the MeSH classification, mesenteric liposarcoma appears to be classified with retroperitoneal neoplasms. Two synchronous mesenteric liposarcomas must be very unusual. We report a rare case of double mesenteric liposarcoma in a 66-year-old female patient. She was treated with wide surgical resection alone without adjuvant chemotherapy and she recovered fully.