A long-surviving case after surgical resection of a solitary lung metastasis from gastric cancer (GC) is reported. A 68-year-old woman had undergone total gastrectomy with splenectomy and D2 lymphadenectomy for GC. Gross examination of the resected specimen showed a type 2 tumor arising from the esophago-gastric junction. On pathological diagnosis and staging, the GC was a moderately-differentiated tubular adenocarcinoma a, pT2 (MP), int, INFβ, ly1, v0, N1, H0, P0, M0, stage IIB according to the Japanese classification systems (JCGC 14th edition). She was treated with S-1 adjuvant chemotherapy after surgery. Seven months after surgery, chest CT showed a mass lesion in the upper lobe of the right lung without other metastases. After an interval of 3 months, she underwent left upper lobectomy for the lung tumor. The pathological diagnosis of the resected specimen was a moderately-differentiated adenocarcinoma, and immunohistochemistry showed expression of CDX2, whereas CK7, CK20, and TTF-1 were not present ; it was thus considered a metastasis from GC. The patient's postoperative course was uneventful, and there were no signs of recurrence at 4 years after surgery. Pulmonary metastasectomy for GC can result in long-term survival for a highly selected group of patients with a solitary, isolated lesion.