Ferroptosis is a novel cell death modality discovered in recent years that is different from apoptosis and necrosis. It is usually associated with changes in the regulatory signaling in multiple organelles and depends on iron. It is caused by an imbalance between the generation and degradation of intracellular lipid reactive oxygen species (ROS). In addition to increased levels of cytoplasmic ROS and lipids, decreased mitochondrial volume and thickened mitochondrial membranes are markers of ferroptotic death. Gastric cancer is a common malignant tumor, but few studies on the possible role of ferroptosis in gastric cancer have been reported. Although ferroptosis is involved in multifactor-induced carcinogenesis, studies have also shown the role of ferroptosis in the selective killing of tumor cells, thereby inhibiting tumor progression and metastasis. In this paper, the definition, characteristics, and regulatory mechanism of ferroptosis and its potential role in gastric cancer are discussed. Therefore, this review is expected to provide a reference for the treatment of diseases based on ferroptosis and provide a direction for future research on the pathogenesis and development of gastric cancer and the development of anticancer drugs.