Gastric neuroendocrine carcinoma is a rare tumor which has a poor prognosis. Herein, we present a 55-year-old woman who presented with complaints of recurrent vomiting, hematemesis and weight loss. Endoscopic examination showed a large ulcerated mass in the antrum. Microscopic evaluation of the specimen taken through biopsy was compatible with a small round cell tumor. However, definitive histopathological diagnosis was made after surgical resection which revealed a neuroendocrine neoplasm immunohistochemically positive for Chromogranin A and Neuron specific enolase. As a result a diagnosis of neuroendocrine carcinoma of stomach was made for the patient.