OBJECTIVES: The endoscopic features of gastric neuroendocrine tumors (G-NETs) remain unclarified. The present study investigated the endoscopic features of G-NETs in relation to the clinicopathological findings. METHODS: This retrospective study analyzed consecutive patients with G-NETs who received endoscopic or surgical treatment between January 2005 and December 2023. The endoscopic and clinicopathological findings of the lesions were analyzed to provide diagnostic information. RESULTS: Among 29 patients, the characteristic endoscopic findings of G-NETs on white-light images were reddish color (66%), dilated vessels (83%), submucosal tumor-like marginal elevation (59%), and central depression (48%). The gross appearance of G-NETs was classified into two macroscopic subtypes: reddish polypoid lesions ( CONCLUSIONS: These endoscopic features should increase the index of suspicion and help clinicians to correctly diagnose G-NETs through the pathological examination of biopsy specimens.