Gastric metastasis from ovarian cancer is rarely reported worldwide. In Korea, only 2 such cases have been reported. Here we report a case of a 58-year-old woman with metastatic gastric cancer from an ovarian adenocarcinoma. Endoscopic examination showed that the cancer presented as a submucosal tumor without ulceration. A subsequent gastrectomy confirmed the diagnosis of metastatic ovarian serous adenocarcinoma.