Background: Isolated gastric sarcoidosis is a rare manifestation of sarcoidosis, typically presenting without prior pulmonary or systemic involvement. Case Report: We present a case of isolated gastric sarcoidosis in a patient who initially presented with upper gastrointestinal bleeding, without a history of pulmonary or systemic sarcoidosis. Conclusion: Surgical intervention for upper gastrointestinal sarcoidosis is warranted in cases of severe symptoms or lack of response to conservative management. Early consideration for surgical intervention is crucial in cases of isolated gastric sarcoidosis with ulcerations and hematemesis to prevent life-threatening upper gastrointestinal hemorrhage.